Investigation of noise current on the wire harness in the EV deriving from WPT

In recent years, wireless power transmission (WPT) to an electric vehicle (EV) has attracted increasing attention. More than several kW is assumed for WPT, so that electromagnetic interference (EMI) is required to be considered. The WPT can also affect the control system and the automotive networks of the EV. Therefore, the noise current induced on the wire harness due to WPT cannot be ignored. The purpose of this paper is to investigate the noise current on the wire harness. As a result of the investigation, we confirmed up to several hundred μA on the wire harness.