Stability Criterion for Cascaded System With Constant Power Load
Stability Criterion for Cascaded System With Constant Power Load
复制标题
恒功率负载级联系统的稳定性判据
DOI：
10.1109/tpel.2012.2211619
复制
发表时间：
2013-04
期刊：
影响因子：
--
通讯作者：
Qian, Zhaoming
中科院分区：
文献类型：
--
作者：
Du, Weijing;Zhang, Junming;Zhang, Yang;Qian, Zhaoming
随着可再生能源的发展，直流配电系统（DPS）变得越来越有吸引力。尽管每个转换器都基于独立运行且具有足够的稳定性而精心设计，但整个系统的稳定性仍然是一个大问题。由于功率变换器的级联连接是直流DPS中最主要的连接形式之一，因此级联系统的稳定性分析对于保证整个系统的稳定性非常重要。基于Lyapunov线性化方法和Brayton-Moser混合势理论，研究了直流DPS级联系统的平衡点稳定性和吸引区域的估计。在此基础上，得到了级联系统在小信号和大信号扰动下的稳定性预测准则。这两个判据简单明了，可以统一得到一个通用的稳定性判据来预测系统在小信号和大信号瞬态扰动下的稳定性。本文提出并讨论了系统参数与稳定性之间的关系。因此，所提出的准则可以在设计过程中预测和保证级联系统的稳定运行，而不是反复试验，并且有助于在系统级设计中选择匹配的功率转换器。仿真和实验结果验证了所提出准则的有效性。
With the development of renewable energy, dc distribution power system (DPS) becomes more and more attractive. The stability of whole system is still a big concern though every single converter is well designed based on the stand-alone operation with sufficient stability. Since the cascaded connection of power converters is one of the most dominant connection forms in the dc DPS, the stability analysis of the cascaded system is very important to ensure stability of the whole system. Based on the Lyapunov linearization method and Brayton–Moser's mixed potential theory, stability of equilibrium point and an estimation of the region of attraction are investigated for cascaded system in the dc DPS. Based on the analysis, stability prediction criteria for cascaded system under small-signal and large-signal disturbances are obtained. The two criteria are simple and straightforward, which can be unified to get a general stability criterion to predict system's stability under both small-signal and large-signal transient disturbances. The relationship between system parameters and the stability is presented and discussed in the paper. Therefore, instead of trial and error, the proposed criterion can predict and guarantee the stability operation of cascaded system during the design process, and it is also helpful to select matched power converters in system level design. The simulation and experimental results verify the effectiveness of the proposed criterion.
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DOI：
10.1109/tcsi.2002.803350
发表时间：
2002-12
影响因子：
5.1
作者：
Y. Berkovich;A. Ioinovici
通讯作者：
Y. Berkovich;A. Ioinovici
影响因子：
6.7
作者：
Xiaogang Feng;Jinjun Liu;F. Lee
通讯作者：
Xiaogang Feng;Jinjun Liu;F. Lee
DOI：
10.1109/pesc.1995.474987
发表时间：
1995-06
期刊：
Proceedings of PESC '95 - Power Electronics Specialist Conference
影响因子：
--
作者：
Mohamed Bellthayat;Roger Cooley;Arthur Witulski
通讯作者：
Mohamed Bellthayat;Roger Cooley;Arthur Witulski
DOI：
10.1109/ecce.2011.6063837
发表时间：
2011-11
期刊：
2011 IEEE Energy Conversion Congress and Exposition
影响因子：
--
作者：
W. Du;Yang Zhang;Junming Zhang;Z. Qian
通讯作者：
W. Du;Yang Zhang;Junming Zhang;Z. Qian
DOI：
10.1109/iscas.2002.1010247
发表时间：
2002-08
期刊：
2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353)
影响因子：
--
作者：
Y. Berkovich;A. Ioinovici
通讯作者：
Y. Berkovich;A. Ioinovici