Stability Analysis of Power Converter-Based Constant Power Load With Reduced-Order Model

被引：5

作者：

Xu, Ruokai ^{[1
]}

Zou, Zhixiang ^{[1
]}

Tang, Jian ^{[1
]}

Liu, Xingqi ^{[1
]}

Zhang, Yi ^{[1
]}

Xu, Chenhang ^{[1
]}

机构：

[1] Southeast Univ, Sch Elect Engn, Nanjing 210096, Peoples R China

来源：

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN INDUSTRIAL ELECTRONICS | 2023年 / 4卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Power system stability; Impedance; Thermal stability; Stability criteria; Computational modeling; Phase locked loops; Load modeling; Converter-based constant power load (CPL); impedance-based analysis; reduced-order model; small-signal stability;

D O I：

10.1109/JESTIE.2023.3239324

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The negative incremental resistive feature is one characteristic of power electronics-based constant power load (CPL), which may cause system instability. However, the stability assessment of such a system is not easy and the computation burden is usually heavy due to the complexity of the models. With this consideration, a simplified model using Jordan continued-fraction expansion is proposed to reduce the model complexity while the accuracy can be maintained entire the whole frequency range. Moreover, this article thoroughly analyzes the impact of different control elements and their parameters of three-phase converter-based CPL on system stability based on the analysis of the reduced-order impedance model. The parameter sensitivity analysis is carried out to reveal the influence of different parameters on the system stability. Simulation and experimental results are provided to verify the effectiveness of the reduced-order model and the theocratical analysis.

引用

页码：756 / 766

页数：11

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