A novel circuit for non-contact charging through electro-magnetic coupling

Author

Sakamoto, Hiroshi ; Harada, Koosuke

Author_Institution

Dept. of Electron., Kumamoto Inst. of Technol., Kumamoto, Japan

fYear

1992

fDate

29 Jun-3 Jul 1992

Firstpage

168

Abstract

A DC-to-DC power converter suitable for noncontact charging a rechargeable cell using electromagnetic coupling is presented. The circuit is a self-oscillated class C DC-to-DC power converter, for reducing the switching loss and the core loss of the transformer. Zero voltage switching is realized by a resonance of the parasitic parameters of the transformer. Through electromagnetic coupling using this class C converter, a noncontact battery charger of 86% efficiency has been achieved, under input and output voltages of 140 V and 6 V, respectively

Keywords

battery chargers; losses; power convertors; power supplies to apparatus; power transformers; secondary cells; switching circuits; 140 V; 6 V; 86 percent; DC-to-DC power converter; ZVS; core loss; electromagnetic coupling; noncontact battery charger; noncontact charging; parasitic parameters; power transformers; rechargeable cell; resonance; secondary cells; switching loss; Batteries; Core loss; Coupling circuits; DC-DC power converters; Electromagnetic coupling; Frequency; Inverters; Oscillators; Power transformers; Switching loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1992. PESC '92 Record., 23rd Annual IEEE

Conference_Location

Toledo

Print_ISBN

0-7803-0695-3

Type

conf

DOI

10.1109/PESC.1992.254708

Filename

254708