Performance Estimation of Power Factor Corrected Converters for BLDC Motor Drive

A comparative analysis of three Power Factor Correction (PFC) converters i.e. Single-Ended Primary Inductance Converter (SEPIC), Cuk Converter and Zeta Converter have been done on the BLDC motors. BLDC motors are generally used for low power application thus they are powered through a 1$-\Phi$ sinusoidal AC supply with a Full Bridge Diode Rectifier (DBR). The DBR decreases the power factor and thereby the power quality of the complete system and because of this various power quality concerns have been raised in BLDC motors. A PFC converter offers a good solution in meeting the power quality demands and increasing the reliability of the system. For getting an output voltage for a corresponding speed at the end of the PFC converter, a voltage follower scheme has been implemented successfully in the system. Also, various parameters like efficiency, power factor and Total Harmonic Distortion (THD) have been compared for all the three converters. The simulation of the model is performed on the MATLAB/ SIMULINK software. By the given comparison of the obtained result, the apt converter can be chosen by the designer according to the specifications.