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A high efficiency zero-voltage-switching (ZVS) Boost voltage doubler converter for power factor correction is proposed. The topology can be used to perform ZVS in the main switches and the passive switches, and zero-current switching in the auxiliary switch. Furthermore, soft commutation of the main switch is achieved without additional current stress by the presented ZVS-PWM (pulse width modulation) auxiliary circuit. A significant reduction in the conduction losses is achieved, since the circulating current for the soft switching flows only going through the auxiliary circuit and a minimum number of switching devices are involved in the circulating current path, and the proposed rectifier is suit for low line voltage and high power applications. Computer simulation and an experimental prototype has been implemented. The efficiency up to 97% and power factor over 0.992 has been measured.
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Proceedings of the Chinese Society of Electrical Engineering
ISSN: 0258-8013
CN: 11-2107/TM
Year: 2008
Issue: 36
Volume: 28
Page: 62-67
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