Title :
New start-up schemes for isolated full-bridge boost converters
Author :
Zhu, Lizhi ; Wang, Kunrong ; Lee, Fred C. ; Lai, Jih-Sheng
Author_Institution :
Ecostar, Dearborn, MI, USA
fDate :
6/22/1905 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 the PWM control timing for the normal boost mode operation, is investigated. Design considerations on the relationships 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; transformer windings; 1.6 kW; 12 V; 288 V; PWM control timing; boost choke windings; boost mode operation; control timing; design considerations; isolated full-bridge boost converters; main transformer windings; start-up schemes; turns ratios; DC-DC power converters; Inductance; Inductors; Prototypes; Pulse width modulation; Switches; Switching circuits; Timing; Voltage; Windings;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2000. APEC 2000. Fifteenth Annual IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5864-3
DOI :
10.1109/APEC.2000.826120
