The mainstream battery pack voltages of electric vehicles (EVs) range from 200 V to 500 V. Compared with these conventional 400-V battery packs, 800-V EVs have smaller cables, higher charging power, and a longer range. Although existing literature has overcome the drawbacks caused by one or two parameter variations in a 400-V EV WPT system, few works discuss the Z classes, output voltages, and output power levels simultaneously.

Due to the range of battery capacities in different electric vehicles (EVs), wireless power transfer (WPT) systems need to have a large variation in the output power. Since conventional systems are usually designed for a custom specification, the power and efficiency may be significantly reduced due to the need for interoperability between ground assembly and vehicle assembly with different power ratings. To address this issue this paper proposes a DC-link parallel AC-link series (DPAS) multi-inverter multi-rectifier (MIMR) architecture for high-power WPT systems.

Conventional high-power wireless power transfer (WPT) systems suffer from hard switching, current sharing, and crossing coupling issues when providing a wide-range power supply. To improve the power level and regulation performance, we propose a new resonant inductor integrated-transformer based multi-inverter (RIIT-MI) topology for the high-power WPT system. A flexible power capacity can be achieved by increasing the number of inverters. A wide power regulation range with soft switching can be achieved without adding additional components.