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mode power supplies</title> <meta name="description" content="Search results for: switching mode power supplies"> <meta name="keywords" content="switching mode power supplies"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="switching mode power supplies"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 8499</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: switching mode power supplies</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8499</span> Fuzzy Logic Based Sliding Mode Controller for a New Soft Switching Boost Converter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Azam%20Salimi">Azam Salimi</a>, <a href="https://publications.waset.org/abstracts/search?q=Majid%20Delshad"> Majid Delshad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a modified design of a sliding mode controller based on fuzzy logic for a New ZVThigh step up DC-DC Converter . Here a proportional - integral (PI)-type current mode control is employed and a sliding mode controller is designed utilizing fuzzy algorithm. Sliding mode controller guarantees robustness against all variations and fuzzy logic helps to reduce chattering phenomenon due to sliding controller, in that way efficiency increases and error, voltage and current ripples decreases. The proposed system is simulated using MATLAB / SIMULINK. This model is tested under variations of input and reference voltages and it was found that in comparison with conventional sliding mode controllers they perform better. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=switching%20mode%20power%20supplies" title="switching mode power supplies">switching mode power supplies</a>, <a href="https://publications.waset.org/abstracts/search?q=DC-DC%20converters" title=" DC-DC converters"> DC-DC converters</a>, <a href="https://publications.waset.org/abstracts/search?q=sliding%20mode%20control" title=" sliding mode control"> sliding mode control</a>, <a href="https://publications.waset.org/abstracts/search?q=robustness" title=" robustness"> robustness</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20control" title=" fuzzy control"> fuzzy control</a>, <a href="https://publications.waset.org/abstracts/search?q=current%20mode%20control" title=" current mode control"> current mode control</a>, <a href="https://publications.waset.org/abstracts/search?q=non-linear%20behavior" title=" non-linear behavior"> non-linear behavior</a> </p> <a href="https://publications.waset.org/abstracts/28763/fuzzy-logic-based-sliding-mode-controller-for-a-new-soft-switching-boost-converter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28763.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">539</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8498</span> Prediction of Conducted EMI Noise in a Converter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jon%20Cobb">Jon Cobb</a>, <a href="https://publications.waset.org/abstracts/search?q=Nasir"> Nasir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Due to higher switching frequencies, the conducted Electromagnetic interference (EMI) noise is generated in a converter. It degrades the performance of a switching converter. Therefore, it is an essential requirement to mitigate EMI noise of high performance converter. Moreover, it includes two types of emission such as common mode (CM) and differential mode (DM) noise. CM noise is due to parasitic capacitance present in a converter and DM noise is caused by switching current. However, there is dire need to understand the main cause of EMI noise. Hence, we propose a novel method to predict conducted EMI noise of different converter topologies during early stage. This paper also presents the comparison of conducted electromagnetic interference (EMI) noise due to different SMPS topologies. We also make an attempt to develop an EMI noise model for a converter which allows detailed performance analysis. The proposed method is applied to different converter, as an example, and experimental results are verified the novel prediction technique. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=EMI" title="EMI">EMI</a>, <a href="https://publications.waset.org/abstracts/search?q=electromagnetic%20interference" title=" electromagnetic interference"> electromagnetic interference</a>, <a href="https://publications.waset.org/abstracts/search?q=SMPS" title=" SMPS"> SMPS</a>, <a href="https://publications.waset.org/abstracts/search?q=switch-mode%20power%20supply" title=" switch-mode power supply"> switch-mode power supply</a>, <a href="https://publications.waset.org/abstracts/search?q=common%20mode" title=" common mode"> common mode</a>, <a href="https://publications.waset.org/abstracts/search?q=CM" title=" CM"> CM</a>, <a href="https://publications.waset.org/abstracts/search?q=differential%20mode" title=" differential mode"> differential mode</a>, <a href="https://publications.waset.org/abstracts/search?q=DM" title=" DM"> DM</a>, <a href="https://publications.waset.org/abstracts/search?q=noise" title=" noise"> noise</a> </p> <a href="https://publications.waset.org/abstracts/42100/prediction-of-conducted-emi-noise-in-a-converter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42100.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1208</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8497</span> Proton Irradiation Testing on Commercial Enhancement Mode GaN Power Transistor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=L.%20Boyaci">L. Boyaci</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Two basic equipment of electrical power subsystem of space satellites are Power Conditioning Unit (PCU) and Power Distribution Unit (PDU). Today, the main switching element used in power equipment in satellites is silicon (Si) based radiation-hardened MOSFET. GaNFETs have superior performances over MOSFETs in terms of their conduction and switching characteristics. GaNFET has started to take MOSFET’s place in many applications in industry especially by virtue of its switching performances. If GaNFET can also be used in equipment for space applications, this would be great revolution for future space power subsystem designs. In this study, the effect of proton irradiation on Gallium Nitride based power transistors was investigated. Four commercial enhancement mode GaN power transistors from Efficient Power Conversion Corporation (EPC) are irradiated with 30MeV protons while devices are switching. Flux of 8.2x10⁹ protons/cm²/s is applied for 12.5 seconds to reach ultimate fluence of 10¹¹ protons/cm². Vgs-Ids characteristics are measured and recorded for each device before, during and after irradiation. It was observed that if there would be destructive events. Proton induced permanent damage on devices is not observed. All the devices remained healthy and continued to operate. For two of these devices, further irradiation is applied with same flux for 30 minutes up to a total fluence level of 1.476x10¹³ protons/cm². We observed that GaNFETs are fully functional under this high level of radiation and no destructive events and irreversible failures took place for transistors. Results reveal that irradiated GaNFET in this experiment has radiation tolerance under proton testing and very important candidate for being one of the future power switching element in space. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=enhancement%20mode%20GaN%20power%20transistors" title="enhancement mode GaN power transistors">enhancement mode GaN power transistors</a>, <a href="https://publications.waset.org/abstracts/search?q=proton%20irradiation%20effects" title=" proton irradiation effects"> proton irradiation effects</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20tolerance" title=" radiation tolerance"> radiation tolerance</a> </p> <a href="https://publications.waset.org/abstracts/98492/proton-irradiation-testing-on-commercial-enhancement-mode-gan-power-transistor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98492.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">152</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8496</span> Design and Development of Compact 1KW Floating Battery Discharge Regulator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Sreedevi">A. Sreedevi</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Anantaramu"> G. Anantaramu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present space research organizations are striving towards the development of lighter, smaller, more efficient, low cost, and highly reliable power supply. Switch mode power supplies (SMPS) overcome the demerits of linear power supplies such as low efficiency, difficulties in thermal management, and in boosting the output voltage. Space applications require a constant DC voltage to supply its load. As the load varies, the battery terminal voltage tends to vary accordingly. To avoid this variation in the load terminal voltage, a DC-DC regulator is required. The conventional regulator for space applications is isolated boost topology. The proposed topology uses an interleaved push-pull converter with a current doubler secondary to reduce the EMI issues and increase efficiency. The proposed topology uses a floating technique where the converter derives power from the battery and generates only the voltage that is required to fill the gap between the bus and the battery voltage. The direct voltage sense and current loop provide tight regulation of output and better stability. Converter is designed with 50 kHz switching frequency using UC 1825 PWM controller employing both voltage and peak current mode control. Experimental tests have been carried out on the converter under different input and load conditions to validate the design. The experimental results showed that the efficiency was greater than 91%. Stability analysis is done using venable stability analyzer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=push%20pull%20converter" title="push pull converter">push pull converter</a>, <a href="https://publications.waset.org/abstracts/search?q=current%20doubler" title=" current doubler"> current doubler</a>, <a href="https://publications.waset.org/abstracts/search?q=converter" title=" converter"> converter</a>, <a href="https://publications.waset.org/abstracts/search?q=PWM%20control" title=" PWM control"> PWM control</a> </p> <a href="https://publications.waset.org/abstracts/130512/design-and-development-of-compact-1kw-floating-battery-discharge-regulator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130512.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">103</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8495</span> A Strategy of Direct Power Control for PWM Rectifier Reducing Ripple in Instantaneous Power</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Mohammed%20Chikouche">T. Mohammed Chikouche</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Hartani"> K. Hartani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to solve the instantaneous power ripple and achieve better performance of direct power control (DPC) for a three-phase PWM rectifier, a control method is proposed in this paper. This control method is applied to overcome the instantaneous power ripple, to eliminate line current harmonics and therefore reduce the total harmonic distortion and to improve the power factor. A switching table is based on the analysis on the change of instantaneous active and reactive power, to select the optimum switching state of the three-phase PWM rectifier. The simulation result shows feasibility of this control method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=power%20quality" title="power quality">power quality</a>, <a href="https://publications.waset.org/abstracts/search?q=direct%20power%20control" title=" direct power control"> direct power control</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20ripple" title=" power ripple"> power ripple</a>, <a href="https://publications.waset.org/abstracts/search?q=switching%20table" title=" switching table"> switching table</a>, <a href="https://publications.waset.org/abstracts/search?q=unity%20power%20factor" title=" unity power factor"> unity power factor</a> </p> <a href="https://publications.waset.org/abstracts/85214/a-strategy-of-direct-power-control-for-pwm-rectifier-reducing-ripple-in-instantaneous-power" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85214.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">321</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8494</span> Switching Losses in Power Electronic Converter of Switched Reluctance Motor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ali%20Asghar%20Memon">Ali Asghar Memon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A cautious and astute selection of switching devices used in power electronic converters of a switched reluctance (SR) motor is required. It is a matter of choice of best switching devices with respect to their switching ability rather than fulfilling the number of switches. This paper highlights the computational determination of switching losses comprising of switch-on, switch-off and conduction losses respectively by using experimental data in simulation model of a SR machine. The finding of this research is helpful for proper selection of electronic switches and suitable converter topology for switched reluctance motor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=converter" title="converter">converter</a>, <a href="https://publications.waset.org/abstracts/search?q=operating%20modes" title=" operating modes"> operating modes</a>, <a href="https://publications.waset.org/abstracts/search?q=switched%20reluctance%20motor" title=" switched reluctance motor"> switched reluctance motor</a>, <a href="https://publications.waset.org/abstracts/search?q=switching%20losses" title=" switching losses"> switching losses</a> </p> <a href="https://publications.waset.org/abstracts/35250/switching-losses-in-power-electronic-converter-of-switched-reluctance-motor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35250.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">507</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8493</span> A Comprehensive Evaluation of IGBTs Performance under Zero Current Switching</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ly.%20Benbahouche">Ly. Benbahouche</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Currently, several soft switching topologies have been studied to achieve high power switching efficiency, reduced cost, improved reliability and reduced parasites. It is well known that improvement in power electronics systems always depend on advanced in power devices. The IGBT has been successfully used in a variety of switching applications such as motor drives and appliance control because of its superior characteristics. The aim of this paper is focuses on simulation and explication of the internal dynamics of IGBTs behaviour under the most popular soft switching schemas that is Zero Current Switching (ZCS) environments. The main purpose of this paper is to point out some mechanisms relating to current tail during the turn-off and examination of the response at turn-off with variation of temperature, inductance L, snubber capacitors Cs, and bus voltage in order to achieve an improved understanding of internal carrier dynamics. It is shown that the snubber capacitor, the inductance and even the temperature controls the magnitude and extent of the tail current, hence the turn-off time (switching speed of the device). Moreover, it has also been demonstrated that the ZCS switching can be utilized efficiently to improve and reduce the power losses as well as the turn-off time. Furthermore, the turn-off loss in ZCS was found to depend on the time of switching of the device. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PT-IGBT" title="PT-IGBT">PT-IGBT</a>, <a href="https://publications.waset.org/abstracts/search?q=ZCS" title=" ZCS"> ZCS</a>, <a href="https://publications.waset.org/abstracts/search?q=turn-off%20losses" title=" turn-off losses"> turn-off losses</a>, <a href="https://publications.waset.org/abstracts/search?q=dV%2Fdt" title=" dV/dt"> dV/dt</a> </p> <a href="https://publications.waset.org/abstracts/6516/a-comprehensive-evaluation-of-igbts-performance-under-zero-current-switching" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6516.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">316</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8492</span> Multi-Level Pulse Width Modulation to Boost the Power Efficiency of Switching Amplifiers for Analog Signals with Very High Crest Factor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jan%20Doutreloigne">Jan Doutreloigne</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main goal of this paper is to develop a switching amplifier with optimized power efficiency for analog signals with a very high crest factor such as audio or DSL signals. Theoretical calculations show that a switching amplifier architecture based on multi-level pulse width modulation outperforms all other types of linear or switching amplifiers in that respect. Simulations on a 2 W multi-level switching audio amplifier, designed in a 50 V 0.35 mm IC technology, confirm its superior performance in terms of power efficiency. A real silicon implementation of this audio amplifier design is currently underway to provide experimental validation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=audio%20amplifier" title="audio amplifier">audio amplifier</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-level%20switching%20amplifier" title=" multi-level switching amplifier"> multi-level switching amplifier</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20efficiency" title=" power efficiency"> power efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=pulse%20width%20modulation" title=" pulse width modulation"> pulse width modulation</a>, <a href="https://publications.waset.org/abstracts/search?q=PWM" title=" PWM"> PWM</a>, <a href="https://publications.waset.org/abstracts/search?q=self-oscillating%20amplifier" title=" self-oscillating amplifier"> self-oscillating amplifier</a> </p> <a href="https://publications.waset.org/abstracts/82607/multi-level-pulse-width-modulation-to-boost-the-power-efficiency-of-switching-amplifiers-for-analog-signals-with-very-high-crest-factor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82607.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">342</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8491</span> High-Frequency Full-Bridge Isolated DC-DC Converter for Fuel Cell Power Generation Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nabil%20A.%20Ahmed">Nabil A. Ahmed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> DC-DC converters are necessary to interface low-voltage fuel cell power generation systems to a higher voltage DC bus system. A system and method for generating a regulated output power from fuel cell power generation systems is proposed in this paper, this includes a soft-switching isolated DC-DC converter to reduce the idling and circulating currents. The system incorporates a high-frequency center tap transformer link DC-DC converter using secondary-side soft switching control. Snubber capacitors including the parasitic capacitance of the switching devices and the transformer leakage inductance are utilized to achieve zero-voltage switching (ZVS) in the primary side of the high-frequency transformer. Therefore, no extra resonant components are required for ZVS. The inherent soft-switching capability allows high power density, efficient power conversion, and compact packaging. A prototype rated at 6.5 kW is proposed and simulated. Simulation results confirmed a wide range of soft-switching operation and consequently high conversion efficiency will be achieved. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=secondary-side" title="secondary-side">secondary-side</a>, <a href="https://publications.waset.org/abstracts/search?q=phase-shift" title=" phase-shift"> phase-shift</a>, <a href="https://publications.waset.org/abstracts/search?q=high-frequency%20transformer" title=" high-frequency transformer"> high-frequency transformer</a>, <a href="https://publications.waset.org/abstracts/search?q=zero%20voltage" title=" zero voltage"> zero voltage</a>, <a href="https://publications.waset.org/abstracts/search?q=zero%20current" title=" zero current"> zero current</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20switching%20operation" title=" soft switching operation"> soft switching operation</a>, <a href="https://publications.waset.org/abstracts/search?q=switching%20losses" title=" switching losses"> switching losses</a> </p> <a href="https://publications.waset.org/abstracts/44935/high-frequency-full-bridge-isolated-dc-dc-converter-for-fuel-cell-power-generation-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44935.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">310</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8490</span> Fixed-Frequency Pulse Width Modulation-Based Sliding Mode Controller for Switching Multicellular Converter </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rihab%20Hamdi">Rihab Hamdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Amel%20Hadri%20Hamida"> Amel Hadri Hamida</a>, <a href="https://publications.waset.org/abstracts/search?q=Ouafae%20%20Bennis"> Ouafae Bennis</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatima%20Babaa"> Fatima Babaa</a>, <a href="https://publications.waset.org/abstracts/search?q=Sakina%20Zerouali"> Sakina Zerouali</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper features a sliding mode controller (SMC) for closed-loop voltage control of DC-DC three-cells buck converter connected in parallel, operating in continuous conduction mode (CCM), based on pulse-width modulation (PWM). To maintain the switching frequency, the approach is to incorporate a pulse-width modulation that utilizes an equivalent control, inferred by applying the SM control method, to produce a control sign to be contrasted and the ﬁxed-frequency within the modulator. Detailed stability and transient performance analysis have been conducted using Lyapunov stability criteria to restrict the switching frequency variation facing wide variations in output load, input changes, and set-point changes. The results obtained confirm the effectiveness of the proposed control scheme in achieving an enhanced output transient performance while faithfully realizing its control objective in the event of abrupt and uncertain parameter variations. Simulations studies in MATLAB/Simulink environment are performed to confirm the idea. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DC-DC%20converter" title="DC-DC converter">DC-DC converter</a>, <a href="https://publications.waset.org/abstracts/search?q=pulse%20width%20modulation" title=" pulse width modulation"> pulse width modulation</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20electronics" title=" power electronics"> power electronics</a>, <a href="https://publications.waset.org/abstracts/search?q=sliding%20mode%20control" title=" sliding mode control"> sliding mode control</a> </p> <a href="https://publications.waset.org/abstracts/130515/fixed-frequency-pulse-width-modulation-based-sliding-mode-controller-for-switching-multicellular-converter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130515.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">147</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8489</span> A Single Phase ZVT-ZCT Power Factor Correction Boost Converter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yakup%20Sahin">Yakup Sahin</a>, <a href="https://publications.waset.org/abstracts/search?q=Naim%20Suleyman%20Ting"> Naim Suleyman Ting</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20Aksoy"> Ismail Aksoy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a single phase soft switched Zero Voltage Transition and Zero Current Transition (ZVT-ZCT) Power Factor Correction (PFC) boost converter is proposed. In the proposed PFC converter, the main switch turns on with ZVT and turns off with ZCT without any additional voltage or current stresses. Auxiliary switch turns on and off with zero current switching (ZCS). Also, the main diode turns on with zero voltage switching (ZVS) and turns off with ZCS. The proposed converter has features like low cost, simple control and structure. The output current and voltage are controlled by the proposed PFC converter in wide line and load range. The theoretical analysis of converter is clarified and the operating steps are given in detail. The simulation results of converter are obtained for 500 W and 100 kHz. It is observed that the semiconductor devices operate with soft switching (SS) perfectly. So, the switching power losses are minimum. Also, the proposed converter has 0.99 power factor with sinusoidal current shape. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=power%20factor%20correction" title="power factor correction">power factor correction</a>, <a href="https://publications.waset.org/abstracts/search?q=zero-voltage%20transition" title=" zero-voltage transition"> zero-voltage transition</a>, <a href="https://publications.waset.org/abstracts/search?q=zero-current%20transition" title=" zero-current transition"> zero-current transition</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20switching" title=" soft switching"> soft switching</a> </p> <a href="https://publications.waset.org/abstracts/43261/a-single-phase-zvt-zct-power-factor-correction-boost-converter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43261.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">803</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8488</span> 1 kW Power Factor Correction Soft Switching Boost Converter with an Active Snubber Cell</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yakup%20Sahin">Yakup Sahin</a>, <a href="https://publications.waset.org/abstracts/search?q=Naim%20Suleyman%20Ting"> Naim Suleyman Ting</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20Aksoy"> Ismail Aksoy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A 1 kW power factor correction boost converter with an active snubber cell is presented in this paper. In the converter, the main switch turns on under zero voltage transition (ZVT) and turns off under zero current transition (ZCT) without any additional voltage or current stress. The auxiliary switch turns on and off under zero current switching (ZCS). Besides, the main diode turns on under ZVS and turns off under ZCS. The output current and voltage are controlled by the PFC converter in wide line and load range. The simulation results of converter are obtained for 1 kW and 100 kHz. One of the most important feature of the given converter is that it has direct power transfer as well as excellent soft switching techniques. Also, the converter has 0.99 power factor with the sinusoidal input current shape. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=power%20factor%20correction" title="power factor correction">power factor correction</a>, <a href="https://publications.waset.org/abstracts/search?q=direct%20power%20transfer" title=" direct power transfer"> direct power transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=zero-voltage%20transition" title=" zero-voltage transition"> zero-voltage transition</a>, <a href="https://publications.waset.org/abstracts/search?q=zero-current%20transition" title=" zero-current transition"> zero-current transition</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20switching" title=" soft switching"> soft switching</a> </p> <a href="https://publications.waset.org/abstracts/45336/1-kw-power-factor-correction-soft-switching-boost-converter-with-an-active-snubber-cell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45336.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">962</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8487</span> Fuzzy-Sliding Controller Design for Induction Motor Control</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Bouferhane">M. Bouferhane</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Boukhebza"> A. Boukhebza</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Hatab"> L. Hatab</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the position control of linear induction motor using fuzzy sliding mode controller design is proposed. First, the indirect field oriented control LIM is derived. Then, a designed sliding mode control system with an integral-operation switching surface is investigated, in which a simple adaptive algorithm is utilized for generalised soft-switching parameter. Finally, a fuzzy sliding mode controller is derived to compensate the uncertainties which occur in the control, in which the fuzzy logic system is used to dynamically control parameter settings of the SMC control law. The effectiveness of the proposed control scheme is verified by numerical simulation. The experimental results of the proposed scheme have presented good performances compared to the conventional sliding mode controller. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=linear%20induction%20motor" title="linear induction motor">linear induction motor</a>, <a href="https://publications.waset.org/abstracts/search?q=vector%20control" title=" vector control"> vector control</a>, <a href="https://publications.waset.org/abstracts/search?q=backstepping" title=" backstepping"> backstepping</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy-sliding%20mode%20control" title=" fuzzy-sliding mode control"> fuzzy-sliding mode control</a> </p> <a href="https://publications.waset.org/abstracts/44272/fuzzy-sliding-controller-design-for-induction-motor-control" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44272.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">489</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8486</span> Sliding Mode Control and Its Application in Custom Power Device: A Comprehensive Overview</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pankaj%20Negi">Pankaj Negi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays the demand for receiving the high quality electrical energy is being increasing as consumer wants not only reliable but also quality power. Custom power instruments are of the most well-known compensators of power quality in distributed network. This paper present a comprehensive review of compensating custom power devices mainly DSTATCOM (distribution static compensator),DVR (dynamic voltage restorer), and UPQC (unified power quality compensator) and also deals with sliding mode control and its applications to custom power devices. The sliding mode control strategy provides robustness to custom power device and enhances the dynamic response for compensating voltage sag, swell, voltage flicker, and voltage harmonics. The aim of this paper is to provide a broad perspective on the status of compensating devices in electric power distribution system and sliding mode control strategies to researchers and application engineers who are dealing with power quality and stability issues. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=active%20power%20filters%28APF%29" title="active power filters(APF)">active power filters(APF)</a>, <a href="https://publications.waset.org/abstracts/search?q=custom%20power%20device%28CPD%29" title=" custom power device(CPD)"> custom power device(CPD)</a>, <a href="https://publications.waset.org/abstracts/search?q=DSTATCOM" title=" DSTATCOM"> DSTATCOM</a>, <a href="https://publications.waset.org/abstracts/search?q=DVR" title=" DVR"> DVR</a>, <a href="https://publications.waset.org/abstracts/search?q=UPQC" title=" UPQC"> UPQC</a>, <a href="https://publications.waset.org/abstracts/search?q=sliding%20mode%20control%20%28SMC%29" title=" sliding mode control (SMC)"> sliding mode control (SMC)</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20quality" title=" power quality "> power quality </a> </p> <a href="https://publications.waset.org/abstracts/47945/sliding-mode-control-and-its-application-in-custom-power-device-a-comprehensive-overview" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47945.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">439</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8485</span> The Design of PFM Mode DC-DC Converter with DT-CMOS Switch</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jae-Chang%20Kwak">Jae-Chang Kwak</a>, <a href="https://publications.waset.org/abstracts/search?q=Yong-Seo%20Koo"> Yong-Seo Koo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The high efficiency power management IC (PMIC) with switching device is presented in this paper. PMIC is controlled with PFM control method in order to have high power efficiency at high current level. Dynamic Threshold voltage CMOS (DT-CMOS) with low on-resistance is designed to decrease conduction loss. The threshold voltage of DT-CMOS drops as the gate voltage increase, resulting in a much higher current handling capability than standard MOSFET. PFM control circuits consist of a generator, AND gate and comparator. The generator is made to have 1.2MHz oscillation voltage. The DC-DC converter based on PFM control circuit and low on-resistance switching device is presented in this paper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DT-CMOS" title="DT-CMOS">DT-CMOS</a>, <a href="https://publications.waset.org/abstracts/search?q=PMIC" title=" PMIC"> PMIC</a>, <a href="https://publications.waset.org/abstracts/search?q=PFM" title=" PFM"> PFM</a>, <a href="https://publications.waset.org/abstracts/search?q=DC-DC%20converter" title=" DC-DC converter"> DC-DC converter</a> </p> <a href="https://publications.waset.org/abstracts/11839/the-design-of-pfm-mode-dc-dc-converter-with-dt-cmos-switch" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11839.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">451</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8484</span> Development of a Firmware Downloader for AVR Microcontrollers for Educational Purposes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jungho%20Moon">Jungho Moon</a>, <a href="https://publications.waset.org/abstracts/search?q=Lae%20Jeong%20Park"> Lae Jeong Park</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper introduces the development of a firmware downloader for students attending microcontroller-related courses taught by the authors In the courses, AVR microcontroller experiment kits are used for programming exercise and the AVR microcontroller is programmed through a serial communication interface using a bootloader preinstalled on it. To use the bootloader, a matching firmware downloader that runs on a host computer and communicates with the bootloader is also required. When firmware downloading is completed, the serial port used for it needs to be closed. If the downloaded firmware uses serial communication, the serial port needs to be reopened in a serial terminal. As a result, the programmer of the AVR board switches from the downloader program and the serial terminal and vice versa. It is a simple task but quite a hassle to do each time new firmware needs downloading. To provide a more convenient programming environment for the courses, the authors developed a downloader program that includes a serial terminal in it. The program operates in downloader or terminal mode and the mode switching is performed automatically; therefore manual mode switching is not necessary. The feature provides a more convenient development environment by eliminating the need for manual mode switching each time firmware downloading is required. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bootloader" title="bootloader">bootloader</a>, <a href="https://publications.waset.org/abstracts/search?q=firmware%20downloader" title=" firmware downloader"> firmware downloader</a>, <a href="https://publications.waset.org/abstracts/search?q=microcontroller" title=" microcontroller"> microcontroller</a>, <a href="https://publications.waset.org/abstracts/search?q=serial%20communication" title=" serial communication"> serial communication</a> </p> <a href="https://publications.waset.org/abstracts/95847/development-of-a-firmware-downloader-for-avr-microcontrollers-for-educational-purposes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/95847.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">194</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8483</span> A Single Switch High Step-Up DC/DC Converter with Zero Current Switching Condition</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rahil%20Samani">Rahil Samani</a>, <a href="https://publications.waset.org/abstracts/search?q=Saeed%20Soleimani"> Saeed Soleimani</a>, <a href="https://publications.waset.org/abstracts/search?q=Ehsan%20Adib"> Ehsan Adib</a>, <a href="https://publications.waset.org/abstracts/search?q=Majid%20Pahlevani"> Majid Pahlevani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents an inverting high step-up DC/DC converter. Basically, this high step-up DC/DC converter is an appealing interface for solar applications. The proposed topology takes advantage of using coupled inductors. Due to the leakage inductances of these coupled inductors, the power MOSFET has the zero current switching (ZCS) condition, which results in decreased switching losses. This will substantially improve the overall efficiency of the power converter. Furthermore, employing coupled inductors has led to a higher voltage gain. Theoretical analysis and experimental results of a 100W 20V/220V prototype are presented to verify the superior performance of the proposed DC/DC converter. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coupled%20inductors" title="coupled inductors">coupled inductors</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20step-up%20DC%2FDC%20converter" title=" high step-up DC/DC converter"> high step-up DC/DC converter</a>, <a href="https://publications.waset.org/abstracts/search?q=zero-current%20switching" title=" zero-current switching"> zero-current switching</a>, <a href="https://publications.waset.org/abstracts/search?q=Cuk%20converter" title=" Cuk converter"> Cuk converter</a>, <a href="https://publications.waset.org/abstracts/search?q=SEPIC%20converter" title=" SEPIC converter"> SEPIC converter</a> </p> <a href="https://publications.waset.org/abstracts/107674/a-single-switch-high-step-up-dcdc-converter-with-zero-current-switching-condition" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107674.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">719</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8482</span> Minimization of Switching Losses in Cascaded Multilevel Inverters Using Efficient Sequential Switching Hybrid-Modulation Techniques</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=P.%20Satish%20Kumar">P. Satish Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Ramakrishna"> K. Ramakrishna</a>, <a href="https://publications.waset.org/abstracts/search?q=Ch.%20Lokeshwar%20Reddy"> Ch. Lokeshwar Reddy</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Sridhar"> G. Sridhar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents two different sequential switching hybrid-modulation strategies and implemented for cascaded multilevel inverters. Hybrid modulation strategies represent the combinations of Fundamental-Frequency Pulse Width Modulation (FFPWM) and Multilevel Sinusoidal-Modulation (MSPWM) strategies, and are designed for performance of the well-known Alternative Phase Opposition Disposition (APOD), Phase Shifted Carrier (PSC). The main characteristics of these modulations are the reduction of switching losses with good harmonic performance, balanced power loss dissipation among the devices with in a cell, and among the series-connected cells. The feasibility of these modulations is verified through spectral analysis, power loss analysis and simulation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cascaded%20multilevel%20inverters" title="cascaded multilevel inverters">cascaded multilevel inverters</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20modulation" title=" hybrid modulation"> hybrid modulation</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20loss%20analysis" title=" power loss analysis"> power loss analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=pulse%20width%20modulation" title=" pulse width modulation"> pulse width modulation</a> </p> <a href="https://publications.waset.org/abstracts/7094/minimization-of-switching-losses-in-cascaded-multilevel-inverters-using-efficient-sequential-switching-hybrid-modulation-techniques" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7094.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">537</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8481</span> Reducing Power Consumption in Network on Chip Using Scramble Techniques</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vinayaga%20Jagadessh%20Raja">Vinayaga Jagadessh Raja</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Ganesan"> R. Ganesan</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Ramesh%20Kumar"> S. Ramesh Kumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An ever more significant fraction of the overall power dissipation of a network-on-chip (NoC) based system on- chip (SoC) is due to the interconnection scheme. In information, as equipment shrinks, the power contributes of NoC links starts to compete with that of NoC routers. In this paper, we propose the use of clock gating in the data encoding techniques as a viable way to reduce both power dissipation and time consumption of NoC links. The projected scramble scheme exploits the wormhole switching techniques. That is, flits are scramble by the network interface (NI) before they are injected in the network and are decoded by the target NI. This makes the scheme transparent to the underlying network since the encoder and decoder logic is integrated in the NI and no modification of the routers structural design is required. We review the projected scramble scheme on a set of representative data streams (both synthetic and extracted from real applications) showing that it is possible to reduce the power contribution of both the self-switching activity and the coupling switching activity in inter-routers links. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xilinx%2012.1" title="Xilinx 12.1">Xilinx 12.1</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20consumption" title=" power consumption"> power consumption</a>, <a href="https://publications.waset.org/abstracts/search?q=Encoder" title=" Encoder"> Encoder</a>, <a href="https://publications.waset.org/abstracts/search?q=NOC" title=" NOC"> NOC</a> </p> <a href="https://publications.waset.org/abstracts/32831/reducing-power-consumption-in-network-on-chip-using-scramble-techniques" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32831.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">400</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8480</span> Transient Analysis and Mitigation of Capacitor Bank Switching on a Standalone Wind Farm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ajibola%20O.%20Akinrinde">Ajibola O. Akinrinde</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrew%20Swanson"> Andrew Swanson</a>, <a href="https://publications.waset.org/abstracts/search?q=Remy%20Tiako"> Remy Tiako</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There exist significant losses on transmission lines due to distance, as power generating stations could be located far from some isolated settlements. Standalone wind farms could be a good choice of alternative power generation for such settlements that are far from the grid due to factors of long distance or socio-economic problems. However, uncompensated wind farms consume reactive power since wind turbines are induction generators. Therefore, capacitor banks are used to compensate reactive power, which in turn improves the voltage profile of the network. Although capacitor banks help improving voltage profile, they also undergo switching actions due to its compensating response to the variation of various types of load at the consumer’s end. These switching activities could cause transient overvoltage on the network, jeopardizing the end-life of other equipment on the system. In this paper, the overvoltage caused by these switching activities is investigated using the IEEE bus 14-network to represent a standalone wind farm, and the simulation is done using ATP/EMTP software. Scenarios involving the use of pre-insertion resistor and pre-insertion inductor, as well as controlled switching was also carried out in order to decide the best mitigation option to reduce the overvoltage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=capacitor%20banks" title="capacitor banks">capacitor banks</a>, <a href="https://publications.waset.org/abstracts/search?q=IEEE%20bus%2014-network" title=" IEEE bus 14-network"> IEEE bus 14-network</a>, <a href="https://publications.waset.org/abstracts/search?q=pre-insertion%20resistor" title=" pre-insertion resistor"> pre-insertion resistor</a>, <a href="https://publications.waset.org/abstracts/search?q=standalone%20wind%20farm" title=" standalone wind farm"> standalone wind farm</a> </p> <a href="https://publications.waset.org/abstracts/40420/transient-analysis-and-mitigation-of-capacitor-bank-switching-on-a-standalone-wind-farm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40420.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">441</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8479</span> Fast Robust Switching Control Scheme for PWR-Type Nuclear Power Plants</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Piyush%20V.%20Surjagade">Piyush V. Surjagade</a>, <a href="https://publications.waset.org/abstracts/search?q=Jiamei%20Deng"> Jiamei Deng</a>, <a href="https://publications.waset.org/abstracts/search?q=Paul%20Doney"> Paul Doney</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20R.%20Shimjith"> S. R. Shimjith</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20John%20Arul"> A. John Arul</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In sophisticated and complex systems such as nuclear power plants, maintaining the system's stability in the presence of uncertainties and disturbances and obtaining a fast dynamic response are the most challenging problems. Thus, to ensure the satisfactory and safe operation of nuclear power plants, this work proposes a new fast, robust optimal switching control strategy for pressurized water reactor-type nuclear power plants. The proposed control strategy guarantees a substantial degree of robustness, fast dynamic response over the entire operational envelope, and optimal performance during the nominal operation of the plant. To improve the robustness, obtain a fast dynamic response, and make the system optimal, a bank of controllers is designed. Various controllers, like a baseline proportional-integral-derivative controller, an optimal linear quadratic Gaussian controller, and a robust adaptive L1 controller, are designed to perform distinct tasks in a specific situation. At any instant of time, the most suitable controller from the bank of controllers is selected using the switching logic unit that designates the controller by monitoring the health of the nuclear power plant or transients. The proposed switching control strategy optimizes the overall performance and increases operational safety and efficiency. Simulation studies have been performed considering various uncertainties and disturbances that demonstrate the applicability and effectiveness of the proposed switching control strategy over some conventional control techniques. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=switching%20control" title="switching control">switching control</a>, <a href="https://publications.waset.org/abstracts/search?q=robust%20control" title=" robust control"> robust control</a>, <a href="https://publications.waset.org/abstracts/search?q=optimal%20control" title=" optimal control"> optimal control</a>, <a href="https://publications.waset.org/abstracts/search?q=nuclear%20power%20control" title=" nuclear power control"> nuclear power control</a> </p> <a href="https://publications.waset.org/abstracts/163571/fast-robust-switching-control-scheme-for-pwr-type-nuclear-power-plants" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163571.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">134</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8478</span> Time Optimal Control Mode Switching between Detumbling and Pointing in the Early Orbit Phase</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=W.%20M.%20Ng">W. M. Ng</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20B.%20Iskender"> O. B. Iskender</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Simonini"> L. Simonini</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20M.%20Gonzalez"> J. M. Gonzalez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A multitude of factors, including mechanical imperfections of the deployment system and separation instance of satellites from launchers, oftentimes results in highly uncontrolled initial tumbling motion immediately after deployment. In particular, small satellites which are characteristically launched as a piggyback to a large rocket, are generally allocated a large time window to complete detumbling within the early orbit phase. Because of the saturation risk of the actuators, current algorithms are conservative to avoid draining excessive power in the detumbling phase. This work aims to enable time-optimal switching of control modes during the early phase, reducing the time required to transit from launch to sun-pointing mode for power budget conscious satellites. This assumes the usage of B-dot controller for detumbling and PD controller for pointing. Nonlinear Euler's rotation equations are used to represent the attitude dynamics of satellites and Commercial-off-the-shelf (COTS) reaction wheels and magnetorquers are used to perform the manoeuver. Simulation results will be based on a spacecraft attitude simulator and the use case will be for multiple orbits of launch deployment general to Low Earth Orbit (LEO) satellites. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=attitude%20control" title="attitude control">attitude control</a>, <a href="https://publications.waset.org/abstracts/search?q=detumbling" title=" detumbling"> detumbling</a>, <a href="https://publications.waset.org/abstracts/search?q=small%20satellites" title=" small satellites"> small satellites</a>, <a href="https://publications.waset.org/abstracts/search?q=spacecraft%20autonomy" title=" spacecraft autonomy"> spacecraft autonomy</a>, <a href="https://publications.waset.org/abstracts/search?q=time%20optimal%20control" title=" time optimal control"> time optimal control</a> </p> <a href="https://publications.waset.org/abstracts/108761/time-optimal-control-mode-switching-between-detumbling-and-pointing-in-the-early-orbit-phase" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108761.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">117</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8477</span> A Double Epilayer PSGT Trench Power MOSFETs for Low to Medium Voltage Power Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alok%20Kumar%20Kamal">Alok Kumar Kamal</a>, <a href="https://publications.waset.org/abstracts/search?q=Vinod%20Kumar"> Vinod Kumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The trench gate MOSFET has shown itself as the most appropriate power device for low to medium voltage power applications due to its lowest possible ON resistance among all power semiconductor devices. In this research work a double-epilayer PSGT structure using a thin layer of N+ polysilicon as gate material. The total ON-state resistance (RON) of UMOSFET can be reduced by optimizing the epilayer thickness. The optimized structure of Double-Epilayer exhibits a 25.8% reduction in the ON-state resistance at Vgs=5V and improving the switching characteristics by reducing the Reverse transfer capacitance (Cgd) by 7.4%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Miller-capacitance" title="Miller-capacitance">Miller-capacitance</a>, <a href="https://publications.waset.org/abstracts/search?q=double-Epilayer%3Bswitching%20characteristics" title=" double-Epilayer;switching characteristics"> double-Epilayer;switching characteristics</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20trench%20MOSFET%20%28U-MOSFET%29" title=" power trench MOSFET (U-MOSFET)"> power trench MOSFET (U-MOSFET)</a>, <a href="https://publications.waset.org/abstracts/search?q=on-state%20resistance" title=" on-state resistance"> on-state resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=blocking%20voltage" title=" blocking voltage"> blocking voltage</a> </p> <a href="https://publications.waset.org/abstracts/183038/a-double-epilayer-psgt-trench-power-mosfets-for-low-to-medium-voltage-power-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/183038.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">73</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8476</span> Performences of Type-2 Fuzzy Logic Control and Neuro-Fuzzy Control Based on DPC for Grid Connected DFIG with Fixed Switching Frequency</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fayssal%20Amrane">Fayssal Amrane</a>, <a href="https://publications.waset.org/abstracts/search?q=Azeddine%20Chaiba"> Azeddine Chaiba</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, type-2 fuzzy logic control (T2FLC) and neuro-fuzzy control (NFC) for a doubly fed induction generator (DFIG) based on direct power control (DPC) with a fixed switching frequency is proposed for wind generation application. First, a mathematical model of the doubly-fed induction generator implemented in d-q reference frame is achieved. Then, a DPC algorithm approach for controlling active and reactive power of DFIG via fixed switching frequency is incorporated using PID. The performance of T2FLC and NFC, which is based on the DPC algorithm, are investigated and compared to those obtained from the PID controller. Finally, simulation results demonstrate that the NFC is more robust, superior dynamic performance for wind power generation system applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=doubly%20fed%20induction%20generator%20%28DFIG%29" title="doubly fed induction generator (DFIG)">doubly fed induction generator (DFIG)</a>, <a href="https://publications.waset.org/abstracts/search?q=direct%20power%20control%20%28DPC%29" title=" direct power control (DPC)"> direct power control (DPC)</a>, <a href="https://publications.waset.org/abstracts/search?q=neuro-fuzzy%20control%20%28NFC%29" title=" neuro-fuzzy control (NFC)"> neuro-fuzzy control (NFC)</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20power%20point%20tracking%20%28MPPT%29" title=" maximum power point tracking (MPPT)"> maximum power point tracking (MPPT)</a>, <a href="https://publications.waset.org/abstracts/search?q=space%20vector%20modulation%20%28SVM%29" title=" space vector modulation (SVM)"> space vector modulation (SVM)</a>, <a href="https://publications.waset.org/abstracts/search?q=type%202%20fuzzy%20logic%20control%20%28T2FLC%29" title=" type 2 fuzzy logic control (T2FLC)"> type 2 fuzzy logic control (T2FLC)</a> </p> <a href="https://publications.waset.org/abstracts/48773/performences-of-type-2-fuzzy-logic-control-and-neuro-fuzzy-control-based-on-dpc-for-grid-connected-dfig-with-fixed-switching-frequency" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48773.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">419</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8475</span> Domain Switching Characteristics of Lead Zirconate Titanate Piezoelectric Ceramic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mitsuhiro%20Okayasu">Mitsuhiro Okayasu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> To better understand the lattice characteristics of lead zirconate titanate (PZT) ceramics, the lattice orientations and domain-switching characteristics have been directly examined during loading and unloading using various experimental techniques. Upon loading, the PZT ceramics are fractured linear and nonlinearly during the compressive loading process. The strain characteristics of the PZT ceramic were directly affected by both the lattice and domain switching strain. Due to the piezoelectric ceramic, electrical activity of lightning-like behavior occurs in the PZT ceramics, which attributed to the severe domain-switching leading to weak piezoelectric property. The characteristics of domain-switching and reverse switching are detected during the loading and unloading processes. The amount of domain-switching depends on the grain, due to different stress levels. In addition, two patterns of 90˚ domain-switching systems are characterized, namely (i) 90˚ turn about the tetragonal c-axis and (ii) 90˚ rotation of the tetragonal a-axis. In this case, PZT ceramic was loaded by the thermal stress at 80°C. Extent of domain switching is related to the direction of c-axis of the tetragonal structure, e.g., that axis, orientated close to the loading direction, makes severe domain switching. It is considered that there is 90˚ domain switching, but in actual, the angle of domain switching is less than 90˚, e.g., 85.4° ~ 90.0°. In situ TEM observation of the domain switching characteristics of PZT ceramic has been conducted with increasing the sample temperature from 25°C to 300°C, and the domain switching like behavior is directly observed from the lattice image, where the severe domain switching occurs less than 100°C. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PZT" title="PZT">PZT</a>, <a href="https://publications.waset.org/abstracts/search?q=lead%20zirconate%20titanate" title=" lead zirconate titanate"> lead zirconate titanate</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectric%20ceramic" title=" piezoelectric ceramic"> piezoelectric ceramic</a>, <a href="https://publications.waset.org/abstracts/search?q=domain%20switching" title=" domain switching"> domain switching</a>, <a href="https://publications.waset.org/abstracts/search?q=material%20property" title=" material property"> material property</a> </p> <a href="https://publications.waset.org/abstracts/89317/domain-switching-characteristics-of-lead-zirconate-titanate-piezoelectric-ceramic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89317.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">203</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8474</span> Code-Switching and Code Mixing among Ogba-English Bilingual Conversations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ben-Fred%20Ohia">Ben-Fred Ohia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Code-switching and code-mixing are linguistic behaviours that arise in a bilingual situation. They limit speakers in a conversation to decide which code they should use to utter particular phrases or words in the course of carrying out their utterance. Every human society is characterized by the existence of diverse linguistic varieties. The speakers of these varieties at some points have various degrees of contact with the non-speakers of their variety, which one of the outcomes of the linguistic contact is code-switching or code-mixing. The work discusses the nature of code-switching and code-mixing in Ogba-English bilinguals’ speeches. It provides a detailed explanation of the concept of code-switching and code-mixing and explains the typology of code-switching and code-mixing and their manifestation in Ogba-English bilingual speakers’ speeches. The findings reveal that code-switching and code-mixing are functionally motivated and being triggered by various conversational contexts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bilinguals" title="bilinguals">bilinguals</a>, <a href="https://publications.waset.org/abstracts/search?q=code-mixing" title=" code-mixing"> code-mixing</a>, <a href="https://publications.waset.org/abstracts/search?q=code-switching" title=" code-switching"> code-switching</a>, <a href="https://publications.waset.org/abstracts/search?q=Ogba" title=" Ogba"> Ogba</a> </p> <a href="https://publications.waset.org/abstracts/122982/code-switching-and-code-mixing-among-ogba-english-bilingual-conversations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/122982.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">181</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8473</span> A ZVT-ZCT-PWM DC-DC Boost Converter with Direct Power Transfer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naim%20Suleyman%20Ting">Naim Suleyman Ting</a>, <a href="https://publications.waset.org/abstracts/search?q=Yakup%20Sahin"> Yakup Sahin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20Aksoy"> Ismail Aksoy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a zero voltage transition-zero current transition (ZVT-ZCT)-PWM DC-DC boost converter with direct power transfer. In this converter, the main switch turns on with ZVT and turns off with ZCT. The auxiliary switch turns on and off with zero current switching (ZCS). The main diode turns on with ZVS and turns off with ZCS. Besides, the additional current or voltage stress does not occur on the main device. The converter has features as simple structure, fast dynamic response and easy control. Also, the proposed converter has direct power transfer feature as well as excellent soft switching techniques. In this study, the operating principle of the converter is presented and its operation is verified for 1 kW and 100 kHz model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=direct%20power%20transfer" title="direct power transfer">direct power transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=boost%20converter" title=" boost converter"> boost converter</a>, <a href="https://publications.waset.org/abstracts/search?q=zero-voltage%20transition" title=" zero-voltage transition"> zero-voltage transition</a>, <a href="https://publications.waset.org/abstracts/search?q=zero-current%20transition" title=" zero-current transition"> zero-current transition</a> </p> <a href="https://publications.waset.org/abstracts/45333/a-zvt-zct-pwm-dc-dc-boost-converter-with-direct-power-transfer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45333.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">822</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8472</span> Relaxing Convergence Constraints in Local Priority Hysteresis Switching Logic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mubarak%20Alhajri">Mubarak Alhajri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper addresses certain inherent limitations of local priority hysteresis switching logic. Our main result establishes that under persistent excitation assumption, it is possible to relax constraints requiring strict positivity of local priority and hysteresis switching constants. Relaxing these constraints allows the adaptive system to reach optimality which implies the performance improvement. The unconstrained local priority hysteresis switching logic is examined and conditions for global convergence are derived. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adaptive%20control" title="adaptive control">adaptive control</a>, <a href="https://publications.waset.org/abstracts/search?q=convergence" title=" convergence"> convergence</a>, <a href="https://publications.waset.org/abstracts/search?q=hysteresis%20constant" title=" hysteresis constant"> hysteresis constant</a>, <a href="https://publications.waset.org/abstracts/search?q=hysteresis%20switching" title=" hysteresis switching"> hysteresis switching</a> </p> <a href="https://publications.waset.org/abstracts/61209/relaxing-convergence-constraints-in-local-priority-hysteresis-switching-logic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61209.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">393</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8471</span> A New Resonance Solution to Suppress the Voltage Stresses in the Forward Topology Used in a Switch Mode Power Supply</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maamar%20Latroch">Maamar Latroch</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Bourahla"> Mohamed Bourahla</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Forward topology used in switch mode power supply (SMPS) is one of the most famous configuration feeding DC systems such as telecommunication systems and other specific applications where the galvanic isolation is required. This configuration benefits of the high frequency feature of the transformer to provide a small size and light weight of the over all system. However, the stresses existing on the power switch during an ON/OFF commutation limit the transmitted power to the DC load. This paper investigates the main causes of the stresses in voltage existing during a commutation cycle and suggest a low cost solution that eliminates the overvoltage. As a result, this configuration will yield the possibility of the use of this configuration in higher power applications. Simulation results will show the efficiency of the presented method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=switch%20mode%20power%20supply" title="switch mode power supply">switch mode power supply</a>, <a href="https://publications.waset.org/abstracts/search?q=forward%20topology" title=" forward topology"> forward topology</a>, <a href="https://publications.waset.org/abstracts/search?q=resonance%20topology" title=" resonance topology"> resonance topology</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20frequency%20commutation" title=" high frequency commutation"> high frequency commutation</a> </p> <a href="https://publications.waset.org/abstracts/32934/a-new-resonance-solution-to-suppress-the-voltage-stresses-in-the-forward-topology-used-in-a-switch-mode-power-supply" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32934.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">437</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8470</span> Code Switching: A Case Study Of Lebanon</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wassim%20Bekai">Wassim Bekai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Code switching, as its name states, is altering between two or more languages in one sentence. The speaker tends to use code switching in his/her speech for better clarification of his/her message to the receiver. It is commonly used in sociocultural countries such as Lebanon because of the various cultures that have come across its lands through history, considering Lebanon is geographically located in the heart of the world, and hence between many cultures and languages. In addition, Lebanon was occupied by Turkish authorities for about 400 years, and later on by the French mandate, where both of these countries forced their languages in official papers and in the Lebanese educational system. In this paper, the importance of code switching in the Lebanese workplace will be examined, stressing the efficiency and amount of the production resulting from code switching in the workplace (factories, universities among other places) in addition to exploring the social, education, religious and cultural factors behind this phenomenon in Lebanon. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=code%20switching" title="code switching">code switching</a>, <a href="https://publications.waset.org/abstracts/search?q=Lebanon" title=" Lebanon"> Lebanon</a>, <a href="https://publications.waset.org/abstracts/search?q=cultural" title=" cultural"> cultural</a>, <a href="https://publications.waset.org/abstracts/search?q=factors" title=" factors"> factors</a> </p> <a href="https://publications.waset.org/abstracts/143945/code-switching-a-case-study-of-lebanon" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/143945.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">287</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=switching%20mode%20power%20supplies&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=switching%20mode%20power%20supplies&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=switching%20mode%20power%20supplies&page=4">4</a></li> <li class="page-item"><a class="page-link" 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