Title :
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
fDate :
7/1/2003 12:00:00 AM
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;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2003.813758
