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A zero-current and zero-voltage-switching PWM boost full-bridge converter

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2 Author(s)
Linquan Zhou ; Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., China ; Xinbo Ruan

This paper proposes a zero-current and zero-voltage switching (ZCZVS) PWM boost full-bridge (FB) converter. The leading switches can realize ZCS under wide load range using the energy of the output capacitor. With the use of the parasitic capacitors of the lagging switches and auxiliary inductance paralleled with primary winding of the transformer, the lagging switches can realize ZVS under any load. Compared with ZCS PWM boost FB converter, the proposed converter has no current duty cycle loss. The operation principle and parameters design are analyzed in detail. Experimental results are presented to verify the effectiveness of the proposed converter.

Published in:

Power Electronics Specialist Conference, 2003. PESC '03. 2003 IEEE 34th Annual  (Volume:2 )

Date of Conference:

15-19 June 2003