Design of A Wireless Power Transfer Converter with LC/S Compensation for Electrical Vehicle Battery Charge Applications

Abstract

Wireless power transfer (WPT) has drawn a lot of attention due to its significant advantages such as safety, reliability, weather proof, etc. This paper presents the design methodology of a WPT converter with LC/S compensation topology for electrical vehicle (EV) battery charge applications. The power loss analysis is employed for each component in the WPT converter. The components in the converter are determined based on low power loss and high-power efficiency. The Lithium- ion battery is also preferred in the design due to it’s high power density advantage. Since the designed WPT system does not use a dc-dc converter to regulate the output current and voltage, the size and the weight of the overall system can be reduced. Finally, according to given design procedure, a field-electric common simulation of WPT converter is performed with 2 kW output power while the output voltage is changing between 250 V-400 V. The simulated peak efficiency of the converter is obtained around 96.70% with 0.3 coupling coefficient.