考虑寄生参数的双管升压变换器高频工作特性分析

doi:10.19595/j.cnki.1000-6753.tces.210129

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Abstract Compared with the traditional Boost converter, the dual-switch Boost converter can obtain higher gain, effectively reduce the voltage/current stress of the switching tube, and can be used as an interface converter for photovoltaic systems and fuel cell systems. In order to improve the power density of the power conversion system, it is necessary to further increase the switching frequency. However, parasitic parameters that can be ignored in circuit analysis at low switching frequency will have an important impact on the gain and device stress of the high frequency converter. It is difficult to evaluate the influence of parasitic parameters on the performance of the dual-switch Boost converter at high frequency by the current analysis methods. Therefore, this paper establishes a model of dual-switch Boost converter considering parasitic parameters at high frequency, puts forward the sneak circuit modes considering parasitic parameters according to the sneak circuit analysis method, and analyzes the influence of parasitic parameters on the gain of dual-switch Boost converters, voltage/current stress of power devices, converter loss and efficiency at high frequency. Finally, an experimental platform of the dual-switch Boost converter is established in the laboratory to verify the circuit performance at high frequency.

Key words： High switching frequency parasitic parameters dual-switch boost converter chara-cteristic analysis

Received: 23 January 2021

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TM46

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	Articles by authors
	Guo Yingjun
	Kong Dekai
	Tang Yu
	Sun Hexu
	Dong Yan

Cite this article:

Guo Yingjun,Kong Dekai,Tang Yu等. Analysis of Operating Characteristics of Dual-Switch Boost Converter Considering Parasitic Parameters under High Frequency Conditions[J]. Transactions of China Electrotechnical Society, 2022, 37(6): 1431-1441.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210129 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I6/1431

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