Fuzzy Resilient Control of DC Microgrids with Constant Power Loads Based on Markov Jump Models

Wei Hu, Yu Shen, Fan Yang, Zhen Chang () and Shanglin Zhao
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Wei Hu: Electric Power Research Institute, State Grid Hubei Electric Power Company, Wuhan 430070, China
Yu Shen: Electric Power Research Institute, State Grid Hubei Electric Power Company, Wuhan 430070, China
Fan Yang: Electric Power Research Institute, State Grid Hubei Electric Power Company, Wuhan 430070, China
Zhen Chang: School of Automation, Nanjing Institute of Technology, Nanjing 211167, China
Shanglin Zhao: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China

Mathematics, 2024, vol. 12, issue 17, 1-20

Abstract: This paper addresses the fuzzy resilient control of DC microgrids with constant power loads. The DC microgrid is subject to abrupt parameter changes which are described by the Markov jump model. Due to the constant power loads, the DC microgrid exhibits nonlinear dynamics which are characterized by a T-S fuzzy model. According to the parallel distributed compensation principle, mode-dependent fuzzy resilient controllers are designed to stabilize the resultant T-S fuzzy Markov jump DC microgrid. The “resilient” means the controller could cope with the uncertainty caused by the inaccurate execution of the control laws. This uncertainty is governed by a Bernoulli distributed random variable and thus may not occur. Then, the mean square exponential stability is analyzed for the closed-loop system by using the mode-dependent Lyapunov function. Since the stability conditions are not convex, a design algorithm is further derived to calculate the fuzzy resilient controller gains. Finally, simulations are provided to test the effectiveness of the proposed results.

Keywords: Markov jump system; switched system; fuzzy method; resilient control; DC microgrids (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
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