<?xml version="1.0" encoding="UTF-8"?> <article key="pdf/2381" mdate="2007-05-21 00:00:00"> <author>A. K. Al-Othman and Nabil A. Ahmed and A. M. Al-Kandari and H. K. Ebraheem</author> <title>Selective Harmonic Elimination of PWM ACAC Voltage Controller Using Hybrid RGAPS Approach </title> <pages>746 - 752</pages> <year>2007</year> <volume>1</volume> <number>5</number> <journal>International Journal of Electrical and Computer Engineering</journal> <ee>https://publications.waset.org/pdf/2381</ee> <url>https://publications.waset.org/vol/5</url> <publisher>World Academy of Science, Engineering and Technology</publisher> <abstract>Selective harmonic eliminationpulse width modulation techniques offer a tight control of the harmonic spectrum of a given voltage waveform generated by a power electronic converter along with a low number of switching transitions. Traditional optimization methods suffer from various drawbacks, such as prolonged and tedious computational steps and convergence to local optima; thus, the more the number of harmonics to be eliminated, the larger the computational complexity and time. This paper presents a novel method for output voltage harmonic elimination and voltage control of PWM ACAC voltage converters using the principle of hybrid RealCoded Genetic AlgorithmPattern Search (RGAPS) method. RGA is the primary optimizer exploiting its global search capabilities, PS is then employed to fine tune the best solution provided by RGA in each evolution. The proposed method enables linear control of the fundamental component of the output voltage and complete elimination of its harmonic contents up to a specified order. Theoretical studies have been carried out to show the effectiveness and robustness of the proposed method of selective harmonic elimination. Theoretical results are validated through simulation studies using PSIM software package. </abstract> <index>Open Science Index 5, 2007</index> </article>