A multi-resonant converter for non-contact charging with electromagnetic coupling

Author

Laouamer, R. ; Brunello, M. ; Ferrieux, J.P. ; Normand, O. ; Buchheit, N.

Author_Institution

Lab. d´´Electrotech. de Grenoble, CNRS, St. Martin d´´Heres, France

Volume

2

fYear

1997

fDate

9-14 Nov 1997

Firstpage

792

Abstract

A parallel resonant power converter (PRC-LLCC) is analyzed for automatic inductive charging applications. The tank circuit of this power converter consists of a leakage inductance, a magnetizing inductance and two power capacitors with an inductive output filter. This converter allows the transfer of power without oversizing the inverter and a soft-switching mode of the transistors. The soft-switching mode and the sensitivity to the load variation, the coupling factor and the air gap (6-8 mm) are studied using the first harmonic method. The choice of the working range and the validity limit of the analysis method are presented. Theoretical results are validated experimentally with a 3 kW prototype

Keywords

battery chargers; magnetic leakage; power capacitors; power transformers; resonant power convertors; switching circuits; 3 kW; 6 to 8 mm; air gap; applications; coupling factor; inductive output filter; inverter; leakage inductance; load variation sensitivity; magnetizing inductance; multi-resonant power converter; noncontact inductive battery charging; power capacitors; tank circuit; transistor soft-switching; Inductance; Inverters; Load management; Magnetic analysis; Magnetic circuits; Magnetic resonance; Magnetic separation; Power capacitors; Power harmonic filters; Prototypes;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control and Instrumentation, 1997. IECON 97. 23rd International Conference on

Conference_Location

New Orleans, LA

Print_ISBN

0-7803-3932-0

Type

conf

DOI

10.1109/IECON.1997.671998

Filename

671998