Active and Passive Snubbers for Soft-Switching Bidirectional Isolated Full-Bridge Converter
نویسنده
چکیده
A bidirectional isolated full-bridge dc–dc converter with a conversion ratio around nine times, soft startup, and soft-switching features for battery charging/discharging is proposed in this paper. The converter is equipped with an active flyback and two passive capacitor diode snubbers, which can reduce voltage and current spikes and reduce voltage and current stresses, while it can achieve near zerovoltage-switching and zero-current-switching softswitching features. In this paper, the operational principle of the proposed converter is first described, and its analysis and design are then presented. A 1.5kW prototype with a low-side voltage of 48 V and a high-side voltage of 360 V has been implemented, from which measured results have verified the
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