Power quality improvement in BLDC motor drive using PFC converter

Abstract

The use of brushless DC motors (BLDC) in low-power appliances is increasing because of their features of high efficiency, wide speed range, and low maintenance. This project deals with a power factor correction (PFC) based BL Landsman converter-fed brushless DC motor drive as a cost-effective solution for low-power applications. The speed of the BLDC motor is controlled by varying the DC-link voltage of the voltage supply electrical converter feeding the BLDC motor drive. A low-frequency switch of the VSI is used for achieving the electronic commutation of the BLDC motor for reduced switch losses. The PFC-based letter of the alphabet device is designed to control in discontinuous inductance current mode; therefore utilizing a voltage follower approach which needs one voltage sensing element for dc-link voltage management and PFC operation. The projected drive is meant to control a large variety of speed management with improved power quality at AC mains. The performance of the projected drive is valid with experimental results obtained on a developed epitome of a PFC device. This manuscript deals with the configuration of a power factor correction converter feeding a drive of brushless DC motors for medium and low-power equipment. The DC link voltage of the drive system is maintained by a single DC voltage actuator. Two control converters for the BLDC motor drive have been implemented. The control strategy is based on a PFC-Landsman converter-fed BLDC motor drive. Comparison has been made in PI controller-based converter in terms of minimizing ripple and improving the power factor of BLDC Motor drive. The proposed work has been implemented under MATLAB/Simulink environment