Grid to Vehicle Wireless Power Transfer using Single Phase Matrix Converter (SPMC)

Abstract

This paper proposes to design an enhanced grid to the vehicle (G2V) wireless battery charger using Single-Phase Matrix Converter (SPMC) circuit topology. The proposed circuit topology employed a single converter to perform direct AC to AC converter at the transmitting coil, thus reducing circuit complexity and power semiconductor losses. In this paper, the SPMC act as a direct AC to AC converter to convert the input supply voltage at 50 Hz into 20 kHz to meet the switching frequency operation of the Wireless Power Transfer (WPT) function. The high-frequency voltage at the output of the WPT circuit is then being rectified into DC form by using AC to DC converter. WPT technology is being used to remove the annoying wires of the conventional Electric Vehicles (EVs) charging system, thus improve the safety of the vehicle charging process by preventing any contact between the driver and the vehicle charging system. The proposed system uses the minimal circuit topology where the single SPMC circuit is used to replace the conventional two stages of AC-DC-AC converters. A computer simulation model of the proposed system using MATLAB/Simulink has been designed and modeled. The selected results are presented to verify the proposed circuit.