Design and implementation of high power closed-loop AC-DC resonant converter for wireless power transfer

Author

Liu Junwei ; Chung, C.Y. ; Chan, Hian L.

Author_Institution

Dept. of Electr. Eng., Hong Kong Polytech. Univ., Hong Kong, China

fYear

2014

fDate

22-25 June 2014

Firstpage

1

Lastpage

8

Abstract

This paper presents a high power AC-DC converter for wireless power transfer (WPT) using series resonant magnetic coupling technique. Large signal model and small signal model of the converter are analyzed. According to the small signal model, an analog compensator for closed loop control of the converter is designed. In order to realize high efficiency, zero voltage switching technique is applied in the converter. Design considerations and procedures are stated to meet different demands. Finally, a 3.5KW, 175KHz closed loop series resonant converter, with over 85% efficiency and over 200mm air gap between sending and receiving coils is built to verify the design.

Keywords

AC-DC power convertors; closed loop systems; control system synthesis; inductive power transmission; resonant power convertors; zero voltage switching; WPT; analog compensator; closed loop control; closed loop series resonant converter; high power closed-loop AC-DC resonant converter; large signal model; series resonant magnetic coupling technique; small signal model; wireless power transfer; zero voltage switching technique; Coils; Equations; Equivalent circuits; Mathematical model; Signal analysis; Topology; Wireless communication; High power; closed loop control; large signal analysis; magnetic resonant coupling; resonant converter; small signal analysis; wireless power transfer; zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Modeling for Power Electronics (COMPEL), 2014 IEEE 15th Workshop on

Conference_Location

Santander

Type

conf

DOI

10.1109/COMPEL.2014.6877149

Filename

6877149