Double-Sided Voltage-Source Model of an Inductive Wireless Power Transfer System for Electric Vehicles

This paper presents the Voltage Source First Harmonic Model (VSFHM) of a Wireless Power Transfer (WPT) system based on Inductive Power Transfer (IPT), which includes a Ground Assembly (GA) and a Vehicle Assembly (VA) with LCC compensation network that enables efficient energy transfer from the electrical grid to an Electric Vehicle (EV) high voltage battery. The VSFHM is used along with the well-known Impedance Map method to better understand the dynamic behavior of the WPT. In this study, the universal Ground Assembly (GA) test station referenced on the SAE J2954 standard, and a Vehicle Assembly (VA) based on an active rectifier are used to show the benefits of the proposed LCC compensation network design. The results obtained by employing the Voltage-Sourced First Harmonic Model (VSFHM) method is validated through time domain simulations by using the Switched Model (SM) of the WPT system.