输入串联输出并联变换器的控制器设计及稳定性分析方法

doi:10.19595/j.cnki.1000-6753.tces.L70215

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Abstract Input-series-output-parallel (ISOP) converter has the advantages of low voltage stress, low current stress and modularity, thus it′s widely used in high voltage to low voltage applications. A double closed-loop control diagram based on input voltage sharing is studied and the corresponding controller design and stability analysis method are proposed which can not only simplify the controller design procedures but also make benefit for stability analysis. To verify the validity of above method, a very popular bi-directional soft-switching DC-DC converter: LLC full-bridge resonant converter is selected to study. On the basis of existing research, the small signal control model is further derived and improved. Then the controller design and stability analysis are conducted with example. Finally, a two-cell ISOP converter using LLC resonant converter is set up and the above conclusions are verified by the following aspects: start-up process, load change process and power sharing effects.

Key words： Input-series-output-parallel converter control model controller LLC resonant converter stability analysis

Received: 17 August 2016 Published: 14 September 2017

PACS:	U266
	TM712

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	Articles by authors
	Zhang Jiepin
	Liu Jianqiang
	Yang Jingxi
	Trillion Q Zheng

Cite this article:

Zhang Jiepin,Liu Jianqiang,Yang Jingxi等. Controller Design and Stability Analysis Method for Input-Series-Output-Parallel Converters[J]. Transactions of China Electrotechnical Society, 2017, 32(17): 180-188.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L70215 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I17/180

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