Efficient Implementation Of PFC Based Hybrid Reverberation PWM To BLDC Drive

Abstract

A power factor correction (PFC) based Hybrid Resonance Pulse Width Modulation (HRPWM) fed brushless DC motor (BLDC) drive is proposed, analyzed and tested. In this regard, small signal and circuit analysis of HRPWM are calculated in resonance frequency, aboveand below resonance frequency.control method for regulating DC link voltage is also presented. The limitations are eliminated in this project by adding two auxiliary switches (one for buck operation and another one for boost operation) and two auxiliary diodes. In this project buck PFC converter performance is improved by implementing constant ON-time control which is utilized to force it to operate in critical conduction mode (CCM).