Enhancement of Power Quality in PM-BLDC Motor Drive using Bridgeless Landsman PFC Converter for Low Power Home Appliances

This paper focuses on developing and deploying the Landsman converter with a Bridgeless (BL) arrangement to control a Brushless DC Motor (BLDCM) drive, which consists of an LC filter connected in series with the BL-Landsman converter which is then linked with VSI to drive the BLDCM. This arrangement eliminates the need for Diode Bridge Rectifiers (DBR) and the losses that show up with them. The converter is made to operate in a Discontinuous Inductor Current Mode (DCIM) in order to maneuver the input DC voltage fed to the Voltage Source Inverter (VSI) thereby controlling the speed of the BLDCM henceforth the control switches of VSI are operated by the signals of low frequency in this way the switching losses are minimized. This reduces the output ripples at the load side and improves the input side Power factor. The MATLAB -Simulink platform is utilized to evaluate the performance of the overall system.