Performance Analysis of Improved Power Quality Converter Fed PMBLDC Motor Drive with Fuzzy Logic Controller

Abstract

In this project Fuzzy base VSI fed PMBLDC motor drive is presented. The  permanent  magnet  brushless  DC  motors  (PMBLDCM)  are  now  more  popular  in  small  and  medium power  applications  due to  its  wide speed  range  operation,  high  efficiency,  high  starting  torque,  better  reliability,  low  noise  level,  long  lifetime,  brush  less  construction,  ease  of  control  and  reduced  electromagnetic interference  (EMI) problems. The  PMBLDCM  is  controlled  in  the  current controlled  mode  to  achieve  desired  performance.  The proposed  improved  power  quality  PMBLDCM  drive  is designed, modeled  and  simulated.  The ac-dc conversion of electric power is usually required for BLDC motor drive; nevertheless, it causes many current harmonics and results in the poor power factor at input ac mains. This project deals with a ac-dc converter as a single-stage power factor correction (PFC) converter for a permanent magnet brushless dc Motor (PMBLDCM) fed through a Rectifier from a single-phase AC mains. The buck converter show conformity to international power quality standards with improved performance of PMBLDC Motor drive, such as reduction of AC main current harmonics, near unity power factor and reduction of speed and torque ripples. A Three-phase voltage source inverter is used as an electronic commutates to operate the PMBLDC Motor. This  project  presents  an  improved  power  quality bidirectional  voltage  source  converter  (VSC)  fed  permanent magnet  brush  less  DC  motor  (PMBLDCM)  drive by using MAT Lab/Simulink.