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 assafety, reliability, weather proof, etc. This paper presents the design methodology of a WPT converterwith LC/S compensation topology for electrical vehicle (EV) battery charge applications. The powerloss analysis is employed for each component in the WPT converter. The components in the converterare determined based on low power loss and high-power efficiency. The Lithium- ion battery is alsopreferred in the design due to it’s high power density advantage. Since the designed WPT system doesnot use a dc-dc converter to regulate the output current and voltage, the size and the weight of theoverall system can be reduced. Finally, according to given design procedure, a field-electric commonsimulation of WPT converter is performed with 2 kW output power while the output voltage ischanging between 250 V-400 V. The simulated peak efficiency of the converter is obtained around96.70% with 0.3 coupling coefficient.