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首页> 外文会议>Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE >A novel stability criterion of AC power system with constant power load
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A novel stability criterion of AC power system with constant power load

机译：具有恒定功率负载的交流电力系统的新型稳定性判据

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摘要

Power electronic converters in AC power system, such as the boost rectifier, behave as constant power loads (CPLs), which have negative impedance characteristics at the input terminals. And this might cause system instability. In small-signal sense, the stability of the system including the CPL is determined by the source output impedance and the load input impedance (admittance). As a result, the stability criterion based on these impedances is an effective way to check the stability of system. This paper summarizes existing work and introduces our contribution on the stability criterions for AC power system. A novel stability criterion using the infinite-norm of the impedance (admittance) matrixes is proposed. Further, the conservatism of the proposed criterion was compared with the one of the existing criterions.
机译：交流电源系统中的功率电子转换器（例如升压整流器）表现为恒定功率负载（CPL），它们在输入端具有负阻抗特性。这可能会导致系统不稳定。在小信号意义上，包括CPL的系统的稳定性由源输出阻抗和负载输入阻抗（导纳）决定。结果，基于这些阻抗的稳定性判据是检查系统稳定性的有效方法。本文总结了现有工作，并介绍了我们对交流电源系统稳定性标准的贡献。提出了一种使用阻抗（导纳）矩阵的无限范数的新型稳定性判据。此外，将拟议标准的保守性与现有标准之一进行了比较。

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