Development of Random Pulse Width Modulation in Power Electronics Converter
Keywords:
Random Pulse Width Modulation (RPWM);THD analysis; IHD; SPWM; Voltage Source Inverter; Induction Motor;Harmonic reductionAbstract
With the new advancement in Power Electronic devices the high frequency system can often causes acoustic noise,
mechanical vibration, EMI related problems in inverter-fed AC machine due to harmonics content in voltage and current
waveforms which makes operator feel uncomfortable to work. Proposed work deals with one of the Pulse Modulation Technique,
RPWM, Random Pulse Width Modulation, which is a new and effective technique to let the inverter-fed ac motor drive possess
low acoustic noise and mechanical vibration when lower switching frequency is chosen. In this paper the conventional SPWM and
RCPWM is compared in MATLAB/simulink to measure the THD and IHD of voltage and current waveforms.


