Adaptive Quasi-Super-Twisting Sliding Mode Control for Flexible Multistate Switch

Wenzhong Ma, Xiao Wang (), Yusheng Wang, Wenyan Zhang, Hengshuo Li and Yaheng Zhu
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Wenzhong Ma: College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
Xiao Wang: College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
Yusheng Wang: PetroChina Planning and Engineering Institute, Beijing 100083, China
Wenyan Zhang: College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
Hengshuo Li: College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
Yaheng Zhu: College of New Energy, China University of Petroleum (East China), Qingdao 266580, China

Energies, 2024, vol. 17, issue 11, 1-24

Abstract: The mathematical model of a flexible multistate switch (FMSS) exhibits nonlinear and strong coupling characteristics, whereas traditional power decoupling control makes it difficult to completely decouple the output power. The traditional proportional–integral control parameters are difficult to adjust, and their robustness and dynamic performance are poor, which affects the stability of the voltage of the power distribution network and feeder power. To address these problems, this study first converted the original system into a linear system via coordinate transformation using feedback-accurate linearization to decouple active and reactive currents. Thereafter, a super-twisting sliding mode control (ST-SMC) algorithm was introduced, and an adaptive quasi-super-twisting sliding mode control (AQST-SMC) algorithm comprising the quasi-sliding mode function and adaptive proportional term was proposed. An FMSS double closed-loop controller was designed to achieve improved vibration suppression and convergence speed. A three-port FMSS simulation model was developed using MATLAB/Simulink, and the simulation results show that the proposed control strategy enhances the robustness and dynamic performance of the system.

Keywords: flexible distribution network; flexible multistate switch; exact feedback linearization; adaptive quasi-super-twisting sliding mode control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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