Journal of Power Electronics

  • 제23권5호
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  • Pages.821-831
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  • 2023
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  • 1598-2092(pISSN)
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  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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Sliding mode control strategy for microgrid inverter systems

  • Liu Yuan (School of Control Science and Engineering, Tiangong University) ;
  • Chunbo Xiu (School of Control Science and Engineering, Tiangong University) ;
  • Xin Ma (School of Control Science and Engineering, Tiangong University)
  • 투고 : 2022.07.29
  • 심사 : 2022.11.30
  • 발행 : 2023.05.20
⟨ 이전 논문 다음 논문 ⟩

초록

To enhance the voltage control performance of the microgrid inverter and reduce the influence of load disturbance, a sliding mode control method based on a new compound reaching law is proposed. The compound reaching law is designed by adding a variable exponential power term into the exponential reaching law, and replacing the switching function by a hyperbolic tangent function to enhance convergence rates of the sliding mode variables and speed up the system response. Based on the adaptive estimation of the load disturbance, an adaptive sliding mode control law is designed to accomplish the voltage control of a microgrid inverter. Simulation results show that the new compound reaching law has a faster convergence speed than existing common reaching laws, and that it can reach the sliding mode surface at a speed of zero. Therefore, the sliding mode control method based on the new compound reaching law can accomplish inverter voltage control and suppress the voltage fluctuation caused by load change.

키워드

과제정보

This work was supported in part by Tianjin Technology Innovation Guidance Project (Fund) of China under Grant 21YDTPJC00550.

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