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A Novel Fractional Sliding Mode Controller for Three-Phase Active Power Filter

Abstract— This paper extends a conventional sliding mode controller with integer order to fractional ones for a three-phase active power filter (APF) in order to track instruction current quickly and precisely to offset the harmonic current in the electrical grid. A fractional sliding surface is utilized to make the system work on the designed sliding surface stably. The fractional sliding control system can obtain an extra degree of freedom apart from integer orders in order to improve the dynamic performance. Simulations are given to demonstrate the excellent performance of proposed controller. Comparisons with the conventional sliding mode controller show the smaller total harmonic distortion (THD) which is a significant index to evaluate the current quality in the smart grid.

Index Terms— sliding mode control, three-phase active power filter, fractional control.

Juntao Fei, Di Cao, Yuncan Xue
College of IoT Engineering, Hohai University, CHINA

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Cite: Juntao Fei, Di Cao, Yuncan Xue, "A Novel Fractional Sliding Mode Controller for Three-Phase Active Power Filter," Proceedings of 2018 the 8th International Workshop on Computer Science and Engineering, pp. 32-37, Bangkok, 28-30 June, 2018.