Analysis and design of a novel nondissipative active clamp for forward converters

Author

Karvelis, G.A. ; Manolarou, M.D. ; Malatestas, P. ; Manias, S.N.

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece

Volume

2

fYear

2000

fDate

2000

Firstpage

853

Abstract

A novel active clamp topology for forward converters is presented and analyzed in detail in this paper. The proposed circuit overcomes the drawbacks of the already existing reset techniques, since it utilizes the magnetizing energy that was formerly being dissipated in the clamp resistor. The stored energy supplies a second auxiliary output but can also be driven to the main output, thus increasing the efficiency of the converter

Keywords

DC-DC power convertors; active networks; equivalent circuits; field effect transistor switches; magnetisation; power MOSFET; power semiconductor switches; resistors; switching circuits; clamp resistor magnetizing energy; efficiency improvement; forward power converters; nondissipative active clamp design; reset techniques; second auxiliary output; Circuit topology; Clamps; Equations; Flyback transformers; Magnetic circuits; Power semiconductor switches; Semiconductor diodes; Switched capacitor circuits; Switching circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual

Conference_Location

Galway

ISSN

0275-9306

Print_ISBN

0-7803-5692-6

Type

conf

DOI

10.1109/PESC.2000.879926

Filename

879926