A Novel Analysis of the Wireless Battery Chargers For Electrical Vehicle Applications with Variable Coupling Coefficient

Abstract

Wireless power transmission (WPT) has been developed as a new method for charging electrical devices. In recent years, many articles have been presented in this field, and in this article, several examples have been reviewed and analyzed. Using resonance method in wireless power transmission improves system performance. Methods are proposed to match the impedance of the transmitter and receiver side and to adjust the frequency of the resonant circuit. In this paper, we will show that at a constant switching frequency with changes in the coupling coefficient, the circuit will have a high efficiency.