Large-Signal Stability Analysis of DC Microgrid with Constant Power Loads

被引：0
|
作者：
Teng C. [1 ]
Wang Y. [1 ]
Zhou B. [2 ]
Wang F. [1 ]
Zhang F. [1 ]
机构：
[1] School of Electrical Engineering, Shandong University, Jinan
[2] School of Telecommunications Engineering, Xidian University, Xi'an
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 05期
关键词：
Boundary of power limit; Constant power load (CPL); DC microgrid; Large-signal stability; Region of asymptotic stability (RAS);
D O I：
10.19595/j.cnki.1000-6753.tces.L80648
中图分类号：
学科分类号：
摘要：
In the DC microgrid, varieties of power electronic converters are connected to the DC bus with different control methods to stabilize bus voltage. Among these converters, there are power converters that they accurately control the output voltage through closed voltage loops. They behave as constant power loads (CPL) and have a destabilizing effect from negative incremental resistance (NIR) and their nonlinearities. The large-signal stability of the DC microgrid with multiple constant power loads are studied in this paper, mixed potential function theory and Lyapunov stability theorem are used to estimate the boundary of power limit, the influences of circuit parameters on the boundary of power limit of two estimation methods are also compared; T-S fuzzy modeling method and reverse trajectory tracking technique are used to estimate the region of asymptotic stability(RAS), the estimation precision as well as influences of circuit parameters of two estimation methods on estimating the region of asymptotic stability are also compared. Finally, the effectiveness of estimation methods used for the boundary of power limit and the region of asymptotic stability are verified by simulation results. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
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页码：973 / 982
页数：9
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