New start-up schemes for isolated full-bridge boost converters

Author

Zhu, Lizhi ; Wang, Kunrong ; Lee, Fred C. ; Lai, Jih-Sheng

Author_Institution

Ballard Power Syst., Dearborn, MI, USA

Volume

18

Issue

4

fYear

2003

fDate

7/1/2003 12:00:00 AM

Firstpage

946

Lastpage

951

Abstract

Two new start-up schemes for isolated full-bridge boost converters are proposed in this paper. The control timing for each scheme, which is compatible with pulse-width modulated (PWM) control timing for normal boost mode operation, are investigated. Design considerations on the relationship between the turns ratios of the boost choke windings and the main transformer windings, and its effects on the operation of the converter, are studied. The two proposed start-up schemes are experimentally verified on a 1.6 kW, 12 V/288 V prototype.

Keywords

DC-DC power convertors; PWM power convertors; bridge circuits; power transformers; starting; timing circuits; transformer windings; 1.6 kW; 12 V; 288 V; boost choke windings; boost mode operation; design considerations; isolated full-bridge boost converters; main transformer windings; pulse-width modulated control timing; start-up schemes; Inductance; Inductors; Prototypes; Pulse width modulation; Switches; Switching circuits; Thermistors; Timing; Voltage; Windings;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2003.813758

Filename

1214516