A Double-Sided LCC Compensation Network and Its Tuning Method for Wireless Power Transfer

Author

Siqi Li ; Weihan Li ; Junjun Deng ; Nguyen, Trong Duy ; Mi, Chunting Chris

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Michigan, Dearborn, MI, USA

Volume

64

Issue

6

fYear

2015

fDate

Jun-15

Firstpage

2261

Lastpage

2273

Abstract

This paper proposes a double-sided LCC compensation network and its tuning method for wireless power transfer (WPT). With the proposed topology and its tuning method, the resonant frequency is irrelevant with the coupling coefficient between the two coils and is also independent of the load condition, which means that the system can work at a constant switching frequency. Analysis in frequency domain is given to show the characteristics of the proposed method. We also propose a method to tune the network to realize zero voltage switching (ZVS) for the Primary-side switches. Simulation and experimental results verified analysis and validity of the proposed compensation network and the tuning method. A wireless charging system with output power of up to 7.7 kW for electric vehicles was built, and 96% efficiency from dc power source to battery load is achieved.

Keywords

battery chargers; battery powered vehicles; inductive power transmission; zero voltage switching; WPT; ZVS; battery load; constant switching frequency; coupling coefficient; dc power source; double-sided LCC compensation network; efficiency 96 percent; electric vehicles; frequency domain analysis; primary-side switches; tuning method; wireless charging system; wireless power transfer; zero voltage switching; Capacitors; Coils; Couplings; Inductance; Resonant frequency; Topology; Zero voltage switching; Battery charger; current source; electric vehicle; wireless power transfer (WPT); zero voltage switching (ZVS);

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2014.2347006

Filename

6876154