Journals Proceedings

Abstract

Harmonic Elimination in the output voltage of inverters is an important consideration as the presence of harmonics result in several undesirable secondary effects along with distorted waveforms. Most of the off-line PWM techniques use Newton-Raphson method for determination of trigger pulse-positions. This paper uses a combination of Evolutionary strategies and Artificial Neural Networks for design of Intelligent Selective Harmonic Elimination (SHE) controller. The controller calculates the trigger pulse positions intelligently by searching in the given solution space bounded by the practical constraints. The result analysis shows a significant decrement in harmonic components, while improvement in the fundamental voltage component, effectively reducing the Total Harmonic Distortion.