Reduction of Selective Harmonics in PWM AC Chopper Using Teaching–Learning-Based Optimization
Teaching–learning-based optimization (TLBO) has been implemented to solve optimization problem in AC chopper. This optimization problem is formulated in view of getting desired voltage of fundamental frequency with selective harmonic component elimination. Pulse-width modulation (PWM) technique has been utilized for this purpose. PWM technique is utilized to set the desired voltage of fundamental frequency with elimination of selective harmonic component. Thus, TLBO is used for this purpose to obtain multiple switching angles (on and off) keeping the symmetry of switching in both half cycles of supply voltage waveform. And, based on the obtained switching angles, the operation of AC chopper is validated using PSIM software.
KeywordsPWM AC chopper Selective harmonics elimination TLBO
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