Unified model of the asymmetrical half-bridge converter for three important topological variations

Author

Krupskiy, Leonid ; Meleshin, Valery ; Nemchinov, Alexey

Author_Institution

Moscow State Aviation Inst., Russia

fYear

1999

fDate

36312

Abstract

Soft-switching topologies with inherent ZVS capability are suitable for efficient high frequency operation. One of the widely applied soft switching topologies is the asymmetrical half-bridge converter (AHBC) that has available numerous topological variations developed recently. This paper illustrates an unified model and method of analysis by means of AHBC for three topological versions: two-transformer; integrated magnetics; and current doubler rectifier. This approach allows a comparison between the circuits giving insight into design tradeoffs and permitting optimization for component stress, cost and efficiency. The unified model of AHBC is valid for three possible modes of operation: one CCM and two DCM

Keywords

DC-DC power convertors; bridge circuits; circuit optimisation; network topology; switching circuits; ZVS capability; asymmetrical half-bridge power converter; component stress optimisation; continuous conduction mode; cost optimisation; current doubler rectifier topology; design tradeoffs; discontinuous conduction mode; efficiency optimisation; high frequency operation; integrated magnetics topology; soft-switching topologies; topological variations; two-transformer topology; unified model; Circuit topology; Current transformers; Diodes; Equivalent circuits; Frequency conversion; Leg; Magnetic analysis; Rectifiers; Stress; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunication Energy Conference, 1999. INTELEC '99. The 21st International

Conference_Location

Copenhagen

Print_ISBN

0-7803-5624-1

Type

conf

DOI

10.1109/INTLEC.1999.794101

Filename

794101