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Optimization of Switching Phase of a Single‐Phase PWM dc–ac Inverter
Author(s) -
MORITA KAZUYA,
SHINDO TAKUYA,
KURIHARA TAKUYA,
JIN'NO KENYA
Publication year - 2016
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22827
Subject(s) - pulse width modulation , waveform , inverter , particle swarm optimization , control theory (sociology) , modulation index , harmonic , phase (matter) , three phase , minification , computer science , electronic engineering , mathematics , algorithm , engineering , voltage , mathematical optimization , physics , electrical engineering , control (management) , quantum mechanics , artificial intelligence
SUMMARY The purpose of this paper is to improve the efficiency of the single‐phase pulse width modulation (PWM) dc–ac inverter based on optimization of the switching phase of the PWM. Improvement of the efficiency means improvement of the quality of the output waveform and the conversion efficiency, and reduction of the switching loss. We propose an evaluation method involving minimization of the evaluation function by using the particle swarm optimization algorithm. We improve efficiency by setting a criterion for each index. As a result, the proposed algorithm can reduce high harmonic components in switching times shorter than the conventional triangle wave comparison method. Also, we confirm that the algorithm can improve the quality of the output waveform and the efficiency of conversion.