A study of wireless power transfer topologies for 3.3 kW and 6.6 kW electric vehicle charging infrastructure

Autor: Kijun Park, Jung Gu Cho, Mingyu Park, Van Thuan Nguyen, Byung Duk Min, Seung-Duck Yu, Seung-Do Kim, Seong-Woo Yim
Rok vydání: 2016
Předmět:
Zdroj: 2016 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific).
Popis: Inductive wireless power transfer (WPT) systems for electric vehicle (EV) charging applications are designed at 3.3 and 6.6 kW power classes. A comparison of compensation circuits between SS (series - series) and LCL-LCL topologies is carried out. Measurement results of 3.3 kW WPT system show that the SS topology has higher transfer efficiency than the LCL-LCL one with a peak transfer efficiency of 93.1 % and 89.5 % for SS and LCL-LCL topologies, respectively, at a transfer distance of 100 mm. The LCL-LCL topology is more robust than the SS topology in terms of power factor when a misalignment between coils occurs or when the frequency varies. Measurement results of 3.3 kW WPT system are consistent to the circuit simulation. The WPT systems operate at a frequency of 85 kHz.
Databáze: OpenAIRE