Real-time Stability Analysis of Power Electronic Systems

被引：0
|
作者：
Rygg, Atle [1 ]
Molinas, Marta [1 ]
机构：
[1] Norwegian Univ Sci & Technol, Dept Engn Cybernet, Trondheim, Norway
来源：
2016 IEEE 17TH WORKSHOP ON CONTROL AND MODELING FOR POWER ELECTRONICS (COMPEL) | 2016年
关键词：
Impedance; Nyquist criterion; Power electronic systems; Real-time stability analysis; IMPEDANCE MEASUREMENT; IMPLEMENTATION; IDENTIFICATION;
D O I：
10.1109/COMPEL.2016.7556663
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The paper presents a new method for performing online stability analysis of power electronic systems. The method is based on impedance analysis, where the only information required are measurements taken at a single point. The proposed method injects current composed by several frequencies. The impedance is estimated at these frequencies, and the Vector Fitting method is used to estimate a continuous impedance model. The Nyquist Criterion is then applied to the fitted models of source and load subsystem impedance. The stability analysis is performed continuously with an update rate up to 10 Hz. The proposed method has been compared with the conventional frequency sweep method in an experimental setup.
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页数：7
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