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The use of pulse width modulation with selective harmonic elimination (SHE-PWM) in cascaded H-bridges (CHB) multilevel converters allows the reduction of the output current distortion by the elimination of low order harmonic components. However, voltages produced by CHB modules to synthesize the SHE-PWM pattern is an issue that deserves deeper investigation. CHB systems fed by sources with current...
This paper presents a new method to optimize harmonic stepped waveform for multi-level inverters using harmony search algorithm. The method has the benefit of high rate of convergence and precision compared to other conventional optimization methods. The proposed technique can be applied to multi-level inverters with any number of levels. The goal of optimization is to eliminate some low order harmonics...
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