M3C outer loop control strategy based on variable universe fuzzy PI control

Xinghe Ma; Yue Pan

M3C outer loop control strategy based on variable universe fuzzy PI control

Xinghe Ma

Yue Pan

Vol. 24, No. 12, pp. 1869-1878, Dec. 2024

10.1007/s43236-024-00858-6

Modular multilevel matrix converter

Variable universe

Variable universe fuzzy PI

Self adaption

Scaling factor

Abstract

The modular multilevel matrix converter can provide frequency control support for remote AC power grids and has good application prospects in high-voltage low-frequency AC transmission systems. However, the dynamic performance of the traditional outer-loop PI controller is susceptible to changes in its own parameters and external conditions, which in turn influences the control effect. Therefore, a variable universe fuzzy proportional-integral (PI) adaptive outer-loop control strategy is proposed in this paper. Using the automatic sensing and self-adaptive capability of variable universe fuzzy control, the self-adaptation and self-adjustment of the size of the input error of the outer loop is achieved. Meanwhile, a function based scaling factor approach is utilized to develop scaling factors for the input and output domains to enhance the control accuracy. Simulation and experimental findings demonstrate that this control strategy advances system stability and reinforces the self-adaptive adjustment capability of outer-loop control when compared to preexisting approaches.

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Cite this article

[IEEE Style]

X. Ma and Y. Pan, "M3C outer loop control strategy based on variable universe fuzzy PI control," Journal of Power Electronics, vol. 24, no. 12, pp. 1869-1878, 2024. DOI: 10.1007/s43236-024-00858-6.

[ACM Style]

Xinghe Ma and Yue Pan. 2024. M3C outer loop control strategy based on variable universe fuzzy PI control. Journal of Power Electronics, 24, 12, (2024), 1869-1878. DOI: 10.1007/s43236-024-00858-6.