Paper Title
Modeling And Control of A Semi-Bridgeless PFC Rectifier for WPT Systems

Abstract
For a high-efficiency wireless power transfer (WPT) system, this paper develops a semi-bridgeless power-factor-correction (PFC) rectifier with sliding mode controllers designed from a specified pulse-width modulation (PWM) pattern-based state-averaging model. In modern times, the WPT system for electric chargers that have high-efficiency power conversion and high-performance voltage response have become important. In this study, the primary-side LC resonant dc-to-ac converter with four power switches is configured and the secondary-side semi-bridgeless PFC rectifier with two power switches is set up. From the specified PWM pattern, the state-averaging model of the secondary-side rectifier is derived. Then, from the state-averaging model, the sliding-mode voltage and current controllers in series are developed. Finally, a laboratory system for the semi-bridgeless PFC rectifier-based WPT system with the proposed control methods was built. Simulation and experimental results from the laboratory system were illustrated. From the illustrated results, one can confirm the validity of the proposed WPT system in applications and high-performance voltage response due to load variation. Keywords - Semi-bridgeless rectifier, Sliding-mode control, Wireless power transfer.