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This paper investigates the effect of snubber capacitor on the zero voltage switching (ZVS) boundary of the dual active bridge (DAB) DC-DC converter. The analysis is performed to determine the minimum current required during transistor turn-off to achieve successful ZVS and the ZVS boundary operating conditions of the converter are obtained. The operation of the converter during transistor turn-off...
A full-bridge PWM DC/DC converter with controlled output rectifier is presented in this paper. Soft switching for all power switches is achieved by using controlled output rectifier with new lossless energy recovery turn-off snubber on the secondary side of the converter. No circulating current is occurred in the proposed converter with used new control method. The principle of operation is explained...
A new bidirectional dc-dc PWM converter with a steep voltage conversion ratio is proposed in the paper. The proposed converter makes use of coupled inductors to step up small dc voltage to large ones or to step down large dc voltages to small ones. Its switches operate with zero-voltage switching due to a very simple auxiliary circuit that contains a single active switch and a few passive elements...
A new zero-voltage switching (ZVS) pulse width modulation (PWM) DC-DC converter using MOSFETs is proposed in this paper. The proposed converter achieves ZVS with reduction in voltage and current stresses across switches to improve the efficiency by minimizing the switching and conduction losses. The predicted operation principles and theoretical analysis of the presented converter are verified with...
A new zero-voltage switching (ZVS) pulse width modulation (PWM) DC-DC converter using MOSFETs is proposed in this paper. The proposed converter achieves ZVS with reduction in voltage and current stresses across switches to improve the efficiency by minimizing the switching and conduction losses. The predicted operation principles and theoretical analysis of the presented converter are verified with...
Soft switching full-bridge phase-shifted PWM converter using IGBTs with auxiliary transformer is presented in this paper. Zero-voltage and zero-current switching for all power switches is achieved for full load range from no-load to short circuit by adding active energy recovery snubber and auxiliary circuits. The principle of operation is explained and analysed and experimental results are presented...
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