دانلود رایگان مقاله Soft-Switching Bidirectional Isolated Full-Bridge Converter With Active and Passive Snubbers

دانلود رایگان مقاله Soft-Switching Bidirectional Isolated Full-Bridge Converter With Active and Passive Snubbers

 

MARCH 2014

 

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS

 

Soft-Switching Bidirectional Isolated Full-Bridge Converter With Active and Passive Snubbers

 

Abstract

A bidirectional isolated full-bridge dc–dc converter with a conversion ratio around nine times, soft start-up, 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 zero-voltage-switching and zero-current-switching soft-switching features. In this paper, the operational principle of the proposed converter is first described, and its analysis and design are then presented. A 1.5-kW 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 discussed features.

Index Terms—Bidirectional, snubbers, soft switching.

 

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