Design of a Voltage-Controlled PFC Cuk Converter-Based PMBLDCM Drive for Fan

Abstract: This paper deals with the design of a Cuk DC-DC converter for a BLDC drive. A three-phase voltage source inverter is used as an electronic commutator to operate PMBLDCM used in a fan. It uses the concept of the voltage control at dc link proportional to the desired speed of the PMBLDCM. The speed of the motor is controlled to have the optimum speed of the fan and also to improve the power factor. The proposed drive is fed from a single phase ac supply through a diode rectifier followed by a Cuk converter and a link capacitor. The proposed PMBLDCM drive (PMBLDCMD) is designed and modelled, and its performance is evaluated in Matlab-Simulink environment.

Keywords: Cuk converter, power factor (PF) correction (PFC), permanent-magnet (PM) brushless dc motor (PMBLDC), voltage control.