COMPARISON OF DIFFERENT POWER FACTOR CORRECTION TOPOLOGIES

Abstract

Power Factor Correction (PFC) is crucial for minimizing harmonic distortion and ensuring efficient power utilization in AC-DC converters. This thesis presents a comparative analysis of four popular PFC topologies: Boost PFC, Totem-Pole PFC, Totem-Pole PFC with MOSFET line rectification and Interleaved totem-pole PFC. Employing MATLAB Simulink, the performance is evaluated in terms of input power factor, THD, and efficiency. This thesis offers valuable insights into the performance characteristics of diverse PFC topologies, aiding engineers and researchers in selecting the optimal solution for various applications with stringent power quality demands and efficiency considerations. It also includes the performance analysis of 4kW on-board charger (OBC), designed to charge a lithium-ion battery used in an electric vehicle. It includes two stages of power conversion in which the first stage consists of an interleaved totem-pole based PFC converter, to convert the ac grid voltage into DC voltage without polluting the grid current and the second stage consists of a PSFB DC-DC converter to control the charging of the battery cells, while providing isolation between the grid and the battery.