Frequency of islanded microgrid based on μ-H∞ robust control

被引：0
|
作者：
Wu L.-Z. [1 ,2 ]
Ding A.-B. [1 ]
Chen W. [1 ,3 ]
Hao X.-H. [1 ,3 ]
机构：
[1] College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou
[2] Key Laboratory of Gansu Advanced Control for Industrial Processes, Lanzhou University of Technology, Lanzhou
[3] National Experimental Teaching Center of Electrical and Control Engineering, Lanzhou University of Technology, Lanzhou
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2021年 / 25卷 / 11期
关键词：
Frequency control; Microgrid; Time-delay system; Uncertainty; Μ-H[!sub]∞[!/sub] robust control;
D O I：
10.15938/j.emc.2021.11.012
中图分类号：
学科分类号：
摘要：
Aiming at the frequency fluctuation in the isolated AC microgrid caused by the output power uncertainty of wind and photovoltaic power generation and the random fluctuation of load, the microgrid frequency μ-H∞ robust control strategy was proposed. The adopted μ-H∞ is based on the traditional H∞ robust control method to solve external disturbances, the influence of system structure uncertainty on the frequency stability of isolated microgrid system is considered. The state space model of frequency control with time delay and uncertainty was established. Based on the robust control theory, the H∞ controller design method and μ combined with D-K iterative method μ-H∞ frequency robust controller can stabilize the frequency fluctuation caused by parameter perturbation and structural uncertainty, and reduce the impact of communication delay on microgrid system. Finally, through MATLAB/Simulink simulation software and dSPACE hardware in the loop simulation platform, it is verified that the proposed control method has good dynamic performance and strong robustness under the conditions of system parameter perturbation, communication delay and structure uncertainty. © 2021, Harbin University of Science and Technology Publication. All right reserved.
引用
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页码：105 / 113
页数：8
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