Title :
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
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;
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
DOI :
10.1109/IECON.1997.671998
