Enhanced Gain Buck-Boost PFC Converter with Advanced Control for High-Efficiency and Low THD AC-DC Power Conversion

Abstract

This paper introduces a new Modified Gain Buck-Boosting Power Factor Improvement (MGBBPFI) converter which uses novel control strategies for the control of power regulation, power dynamic stability and input power quality. This proposed converter is an alternative to traditional AC-DC converter topologies since it has quick transient response with less overshoot and more speed in response. To verify the characteristics of this converter design, numerous appropriate simulations were performed in MATLAB/Simulink and compared to the characteristics of conventional designs. An 8x hardware prototype was then built and testing was done under closed loop control and it proved capable of handling sudden load variation and changes in input voltage and maintained good steady state accuracy over wide ranges. This demonstrated converter design exhibits a near unity power factor, low Total Harmonic Distortion (THD) of 1.18% and 97.5% very high efficiency. Due to these favorable power conversion qualities, it makes this topology a very promising candidate for present-day power applications including electric vehicles, power supplies and renewable energy systems. This design offers a platform for new developments in the field of power electronics such as advanced adaptive power factor correction techniques, intelligent control strategies, and more efficient power conversion techniques. The presented MGBBPFI converter is a solid foundation for power electronics in the coming decades providing an efficient and reliable way to achieve better power management.