基于无源缓冲电路的零电压关断非隔离型高增益DC-DC变换器

doi:10.19595/j.cnki.1000-6753.tces.171048

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Abstract A non-isolated zero voltage turn-off (ZVT) high step-up DC-DC converter based on passive snubber circuit has been proposed in this paper. With the proposed passive snubber circuit, all switches achieve ZVT , which can reduce the turn off losses of the switches and improve the overall efficiency of the converter. The proposed converter can also achieves high voltage conversion gain. Moreover, the conversion gain can be adjusted by the number of the voltage multiple cells. Above characteristics of the proposed converter make it suitable for photo-voltaic power generation system. This paper illustrates the topology derivation process; operation principle and performance characteristics analysis of the proposed converter with two voltage multiple cells is performed. Finally, the experimental prototype with rated power 800W has been developed to validate the effectiveness of the theoretical analysis.

Key words： Passive snubber circuit ZVT high step-up high efficiency

Received: 19 July 2017 Published: 14 August 2018

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TM46

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	Zhu Binxin
	Song Kun
	Zeng Qingdian
	Wei Yewen

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Zhu Binxin,Song Kun,Zeng Qingdian等. ZVT Non-Isolated High Step-up DC-DC Converter Based on a Passive Snubber Circuit[J]. Transactions of China Electrotechnical Society, 2018, 33(15): 3617-3626.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.171048 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I15/3617

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