Mitigation of supply current harmonics in PMBLDCM drive using Cuk converter

This paper deals with the performance enhancement in a PMBLDC motor drive by the mitigation of current harmonics in the input side using the Cuk converter as power factor correction converter. The PMBLDC motor drive is fed from single phase AC mains through a diode bridge rectifier. A three phase voltage source inverter is used as the electronic commutator of the PMBLDC motor drive. The speed of the drive is controlled by regulating the voltage at DC link and the reference DC link voltage taken is equivalent to the reference speed. The performance of the drive without the DC-DC converter is included in this paper and also the performance is tested with the speed feedback. A comparison is made with different conditions. The proposed PMBLDC motor drive is simulated using MATLAB-SIMULINK. Simulated results are presented to analyze the improvement in power quality at AC mains and the performance of the drive.