Anti-Disturbance Finite-Time Adaptive Sliding Mode Backstepping Control for PV Inverter in Master–Slave-Organized Islanded Microgrid

Chengshun Yang, Shuangfei Ni, Yuchen Dai, Xiaoning Huang and Dongdong Zhang
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Chengshun Yang: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Shuangfei Ni: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Yuchen Dai: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Xiaoning Huang: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Dongdong Zhang: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China

Energies, 2020, vol. 13, issue 17, 1-19

Abstract: With the aim to solve the problem related to the power chattering and anti-disturbance performance of a photovoltaic (PV) inverter in master–slave-organized islanded microgrid, an anti-disturbance finite-time adaptive sliding mode backstepping (DFA-SMB) controller is designed in this paper. First, the topology and the second-order dynamic model of PV inverter are established based on constant DC voltage and constant reactive power control method. Subsequently, the backstepping method is adopted to perform the control of a high-order system. Moreover, a second-order sliding mode differentiator is used to realize the function of command-filter, solving the differential expansion problem caused by the derivation of virtual controller. Besides, the terminal sliding mode control (TSMC) is introduced into the q -axis controller and d -axis inner loop controller, increasing the robustness and reducing the convergence time of the system. Adaptive control and disturbance-observer (DO) are used to perform the adaptive estimation of model parameters and the observation of lumped disturbances, respectively, enhancing the dynamic characteristics of the controller. Finally, a master–slave-organized islanded microgrid with 100 kW PV array is established in MATLAB/Simulink. The results demonstrate that the proposed control method can effectively reduce power chattering and improve the anti-disturbance ability of the PV system.

Keywords: photovoltaic (PV); master–slave-organized islanded microgrid; disturbance-observer (DO); adaptive control; command-filter; terminal sliding mode control (TSMC) (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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