DC-DC变流器带恒功率负载动态响应分析及级联系统稳定性预测

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Abstract The distributed multi-converter system is a typical application and is more popular in applications such as aircrafts, spacecrafts and also ships. Each single converter module is designed stable. However, in the system level, the stability is still a big issue due to the complex interaction among the power converters. The small signal stability of the cascaded system is deeply studied, while the large signal stability issue in cascade system is still not well addressed. Under the assumption that the load converter works as a constant power load(CPL). This paper analyzes the relationships between parameters of the feeder converter and the stability of the cascaded system. Design criterion is proposed. The maximum CPL value is also derived from the calculation. This value can provide criterion for matching the feeder and the downstream converters. Instead of trial and error, the efficiency of design can be greatly increased.

Key words： Cascaded system large-signal stability constant power load

Received: 02 November 2010 Published: 07 March 2014

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TM46

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	Du Weijing
	Zhang Junming
	Zhang Yang
	Qian Zhaoming

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Du Weijing,Zhang Junming,Zhang Yang等. Transient Load Response Analysis of DC-DC Converter with Constant Power Load and Stability Prognosis of Cascaded System[J]. Transactions of China Electrotechnical Society, 2011, 26(1增): 84-91.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I1增/84

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作者简介:杜韦静女, 1985年生, 博士研究生, 主要研究方向电力电子系统集成。张军明男, 1975年出生, 博士, 主要研究方向电力电子系统集成、电源管理及先进电力电子变流技术。