Harmonic and Magnetic Leakage from Wireless Charging System for Electric Vehicles

Magnetic-coupled wireless power transfer technology is widely used in wireless charging for electric vehicles (EVs). In this paper, we establish a circuit diagram and a simulation model of WPT charging system for EVs. The magnetic fields from different sights and the E-field strength when the wireless power transmission system is working are simulated and judged by comparing with International Committee on Non-Ionizing Radiation Protection (ICNIRP) guidelines. The current and the voltage of the transmitter coil and receiver coil are given in this paper. Power grid harmonic is also evaluated as the working frequency is offset.