Sliding mode control strategy for microgrid inverter systems

Liu Yuan; Chunbo Xiu; Xin Ma

Sliding mode control strategy for microgrid inverter systems

Liu Yuan

Chunbo Xiu

Xin Ma

Vol. 23, No. 5, pp. 821-831, May 2023

10.1007/s43236-022-00576-x

Abstract

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.

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Cite this article

[IEEE Style]

L. Yuan, C. Xiu, X. Ma, "Sliding mode control strategy for microgrid inverter systems," Journal of Power Electronics, vol. 23, no. 5, pp. 821-831, 2023. DOI: 10.1007/s43236-022-00576-x.

[ACM Style]

Liu Yuan, Chunbo Xiu, and Xin Ma. 2023. Sliding mode control strategy for microgrid inverter systems. Journal of Power Electronics, 23, 5, (2023), 821-831. DOI: 10.1007/s43236-022-00576-x.