输出本安Buck-Boost变换器的最危险输出短路放电工况研究

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Abstract ：To obtain the most dangerous discharge conditions of Buck-Boost converters, the influences of the input voltage V_i and load resistance R_L on the Output Short-circuit Spark Discharging(OSSD) energy are deeply researched based on the OSSD curve of Buck-Boost converter in this paper. Considering the actual parameter range, It is indicated that the OSSD Energy (OSSDE) of the Buck-Boost converter is a concave function about R_L, but that increases with the decrease of V_i when R_L is less than the critical resistance R_LCcorresponding to the given inductance L, while that increases with the increase of R_L, but it is independent of V_i in the case of R_L>R_LC_.Moreover, the characteristic inductance L_Tin Buck-Boost converters is deduced, and it is found that the corresponding Most Dangerous Conditions(MDC) are that both V_i and R_L are the minimum in the case of L>L_T, while, the corresponding MDC is that R_L is the maximum when L<L_T. The theoretical analysis and proposed MDC are verified by the simulation and experiment results.

Key words： Buck-Boost converters Output-intrinsic safety Short-circuit spark discharging energy the most dangerous conditions

Received: 10 September 2014 Published: 08 September 2015

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TM464

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	Liu Shulin
	Ma Yibo
	Wen Xiaoming
	Qi Lili
	Zhao Yongxiu

Cite this article:

Liu Shulin,Ma Yibo,Wen Xiaoming等. Research on the Most Dangerous Output Short-circuit Discharge Conditions of Output Intrinsic Safety Buck-Boost Converters[J]. Transactions of China Electrotechnical Society, 2015, 30(14): 253-260.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I14/253

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