A Comprehensive Investigation on High-Frequency Oscillation in DC Microgrid

被引：3
|
作者：
Habibullah, Mohammad [1 ]
Mithulananthan, Nadarajah [1 ]
Bhumkittipich, Krischonme N. [2 ]
Amin, Mohammad [3 ]
机构：
[1] Univ Queensland, Sch Informat Technol & Elect Engn, Brisbane, Qld 4072, Australia
[2] Rajamangala Univ Technol Thanyaburi, Dept Elect Engn, Pathum Thani 12110, Thailand
[3] Norwegian Univ Sci & Technol, Dept Elect Power Engn, N-7491 Trondheim, Norway
来源：
IEEE ACCESS | 2021年 / 9卷
关键词：
Oscillators; Power system stability; Eigenvalues and eigenfunctions; Impedance; Stability criteria; Microgrids; Circuit stability; DC microgrid; eigenvalue analysis; impedance analysis; power oscillation; resonance; MODAL INTERACTION; POWER; STABILITY; MODEL;
D O I：
10.1109/ACCESS.2021.3071029
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents the small-signal stability performance of a dc microgrid (MG) and investigates the interactions between the converter controllers by studying the critical modes. A comprehensive small-signal analysis using both the impedance-based method and eigenvalue-based analysis method has been presented thoroughly to investigate the high-frequency oscillation in the dc MG. The results show that there are inherent weak modes within the dc MG which could destabilize the MG in the presence of disturbances. Moreover, the controller gains and dc-link capacitance are found to be the most sensitive to substantial disturbance and have a significant influence on the weak modes leading to oscillation and resonance. The source side converter is found to be more influential than the load side converter in regard to various disturbances.
引用
收藏
页码：54850 / 54861
页数：12
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