负载动态下的级联系统大信号稳定性分析

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摘要级联系统是电力电子变流器应用中最广泛的连接形式之一。在大规模或复杂电源系统中, 级联稳定性(包括小信号稳定性和大信号稳定性)是系统可靠运行的关键因素。本文主要研究负载动态下的电力电子级联系统大信号稳定性, 指出其明显区别于小信号稳定性的现象和特征。基于电压模式控制的Buck变流器的级联系统, 通过小信号稳定性与大信号稳定性的对比分析, 提出了一种大信号稳定性的分析方法, 据此可以对负载动态下的级联系统大信号稳定性进行分析设计。仿真和实验结果验证了该分析方法的正确性。

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	张阳
	张军明
	杜韦静

关键词 ：级联系统, 大信号稳定性, 负载动态, 系统集成

Abstract：The cascaded power electronics system is one of the most popular configurations in the real applications. In large scale or complex power supply systems, the stability for cascaded system including small-signal stability and large-signal stability is the key factor for reliable operation. This paper focuses on the large-signal stability of cascaded power electronic system under load transient, and clarifies the distinct difference from small-signal stability. Based on two cascaded voltage mode Buck converters, the small-signal stability and large-signal stability of the system are analyzed, and an analysis method for large-signal stability is proposed in this paper. With the proposed analysis method, the large-signal stability of cascaded system under load transient can be analyzed and designed. The simulation and experimental results verified the analysis method.

Key words： Cascaded system large-signal stability load transient system integration

收稿日期: 2010-09-19 出版日期: 2014-03-20

PACS:	TM46
	TM910

基金资助:国家自然科学基金资助项目(50907061)。

作者简介: 张阳男, 1987年生, 硕士研究生, 研究方向电力电子系统集成。张军明男, 1975年生, 博士, 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。

引用本文:

张阳, 张军明, 杜韦静. 负载动态下的级联系统大信号稳定性分析[J]. 电工技术学报, 2012, 27(10): 170-175. Zhang Yang, Zhang Junming, Du Weijing. Large-Signal Stability of Cascaded System under Load Transient. Transactions of China Electrotechnical Society, 2012, 27(10): 170-175.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2012/V27/I10/170

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