A High Torque Density Permanent Magnet BLDC Motor Using Fuzzy Controller For Power Factor Correction

Abstract

The speed control of BLDC motor and PFC at ac mains has been achieved using a single voltage sensor. The switching losses in the VSI have been reduced by the use of fundamental frequency switching by electronically commutating the BLDC motor. This project presents a fuzzy based PFC CUK converter-fed BLDC motor drive has been proposed with improved power quality at the ac mains Moreover, the speed of the BLDC motor has been controlled by controlling the dc link voltage of the VSI. Therefore, the BLDC motor is electronically commutated such that the VSI operates in fundamental frequency switching for reduced switching losses. Moreover, the bridgeless configuration of the Cuk converter offers low conduction losses due to partial elimination of diode bridge rectifier at the front end In order to further enhancement of power factor fuzzy controlled cuk converter can be implemented. The simulation results are presented by using Matlab/simulink platform.