Robust model predictive control of a DC microgrid based on a Tube invariant set

被引：0
|
作者：
Wang X. [1 ]
Hou T. [1 ]
Gong W. [1 ]
Liu X. [1 ]
机构：
[1] National Experimental Teaching Demonstration Center of Electrical and Control Engineering, Lanzhou University of Technology, Lanzhou
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2020年 / 48卷 / 17期
基金：
中国国家自然科学基金;
关键词：
DC microgrid; Linear matrix inequality (LMI); Robust model predictive control (RMPC); Tube invariant set; Uncertain system;
D O I：
10.19783/j.cnki.pspc.191324
中图分类号：
学科分类号：
摘要：
In a DC microgrid composed of multiple interconnected Distributed Generation Units (DGUs), the input or exit of the DGU makes the microgrid structure uncertain. To solve this problem, a Robust Model Predictive Control (RMPC) strategy based on a Tube invariant set is applied to the DC microgrid, with off-line design and online real-time control, so that the state of the DC microgrid with uncertain structure always converges to a terminal interference invariant set, and the bus voltage of the DC microgrid is stable when the DGU is put in or out. First, the state equation of the system is analyzed, and the linearized model is derived. Then, the robust model predictive controller is designed. Finally, the feasibility of the control method is verified by numerical simulation with Matlab. © 2020, Power System Protection and Control Press. All right reserved.
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页码：9 / 17
页数：8
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