| 分布式电源系统中变换器的输出阻抗与稳定性分析 |
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| 引用本文： | 佟强,张东来,徐殿国.分布式电源系统中变换器的输出阻抗与稳定性分析[J].中国电机工程学报,2011,31(12). |
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| 作者姓名： | 佟强 张东来 徐殿国 |
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| 作者单位： | 1. 哈尔滨工业大学深圳研究生院,广东省,深圳市,518055
2. 哈尔滨工业大学电气工程与自动化学院,黑龙江省,哈尔滨市,150001 |
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| 摘 要： | 稳定性问题是分布式电源系统的关键问题,它由源变换器的输出阻抗和负载变换器的输入阻抗共同决定.采用理论分析和实验相结合的方法,对连续导电模式(continuous conduction mode,CCM)下Buck型DC-DC变换器输出阻抗的小信号模型、影响因素及优化设计方法进行研究,为制定分布式电源系统中变换器的阻抗标准提供了参考依据.给出一种实用的电流扰动测试法,可以测量变换器的输入、输出阻抗以及级联变换器的阻抗比.采用此方法对搭建的一个级联式DC-DC变换器系统的阻抗比进行测量,并根据阻抗比禁止区对系统的稳定性进行判断.
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| 关 键 词： | 分布式电源系统 稳定性 输入/输出阻抗 阻抗比禁止区 |
Output Impedance and Stability Analysis of Converters in Distributed Power Systems |
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| TONG Qiang
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ZHANG Donglai
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XU Dianguo.Output Impedance and Stability Analysis of Converters in Distributed Power Systems[J].Proceedings of the CSEE,2011,31(12). |
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| Authors: | TONG Qiang ZHANG Donglai XU Dianguo |
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| Affiliation: | TONG Qiang1,ZHANG Donglai1,XU Dianguo2(1.Shenzhen Graduate School,Harbin Institute of Technology,Shenzhen 518055,Guangdong Province,China,2.Colledge of Electrical Engineering and Automation,Harbin 150001,Heilongjiang Province,China) |
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| Abstract: | Stability issues that are decided by the output impedance of the source converter and the input impedance of the load converter are very important in distributed power systems.The small-signal modeling,effect factors and improvement methods of the output impedance of Buck type DC-DC converters in CCM are investigated in this paper,which provides reference for making converters' impedance standards.A practical impedance measurement approach by using an external small-signal sinusoidal perturbation current is... |
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| Keywords: | distributed power systems stability input/output impedance forbidden region of impedance ratio |
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