Analysis and Design of a Nonisolated Bidirectional ZVS-PWM DC-DC Converter With Coupled Inductors

作者：Das Pritam^*; Mousavi S Ahmad; Moschopoulos Gerry

来源：IEEE Transactions on Power Electronics, 2010, 25(10): 2630-2641.

DOI：10.1109/TPEL.2010.2049863

• Bidirectional converters
• dc-dc converters
• LC resonance
• low-power converters
• pulsewidth-modulated converters
• zero-voltage-switching (ZVS) converters

Anew zero-voltage-switched bidirectional dc-dc converter with coupled inductors is proposed in the paper. The proposed converter can operate with a steep conversion ratio, soft switching, a continuous inductor current, and fixed switching frequency. It can also operate with the switch stresses of a conventional pulsewidth-modulation-tapped/coupled-inductor converter regardless of the direction of power flow and without any voltage spikes across the switches during turn-OFF. These features are due to a very simple auxiliary circuit that is operational regardless of the direction of power flow and absorbs energy from the leakage inductance of the coupled inductors during switch turn-OFF. In the paper, the operation and design of the converter are discussed and its feasibility is confirmed with experimental results obtained from a prototype.

• 出版日期2010-10