(2)High-order sliding mode control of a doubly salient permanent magnet machine driving marine current turbine
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Hao Chena,∗, Shifeng Tanga, Jingang Hana, Tianhao Tanga, Nadia Aït-Ahmedb, Zhibin Zhouc,
Mohamed Benbouzida,d
a The Institute of Power Drive and Control, Shanghai Maritime University, 201306, Shanghai, China
b Institut de Recherche en Energie Electrique de Nantes Atlantique, University of Nantes, 44602, Saint-Nazaire, France
c ISEN Yncréa Ouest, University of Brest, FRE CNRS 3744 IRDL, 29200, Brest, France
d University of Brest, UMR CNRS 6027 IRDL, 29238, Brest, France
Received 31 October 2019; received in revised form 14 February 2020; accepted 7 April 2020
Available online 15 May 2020
Abstract
Due to the harsh and changeable marine environment, one low speed stator-permanent magnet machine named doubly salient permanent
magnet machine with toothed pole is applied for marine current energy conversion system. Indeed, this machine has simple structure,
intriguing fault tolerance, and higher power density, which could adequately satisfy the different complicated operation conditions. However,
its permanent magnet flux-linkage has the same variation period as the inductance which leads to a strong nonlinear coupling system.
Moreover, the torque ripple caused by this special characteristics, uncertainty of system parameters and disturbance of load greatly increases
the difficulty of control in this strongly coupling system. Consequently, the classical linear PI controller is difficult to meet the system
requirement. In this paper, the high-order sliding mode control strategy based on the super-twisting algorithm for this system is creatively
utilized for the first time. The stability of the system within a limited time is also proved with a quadratic Lyapunov function. The relative
simulation results demonstrate convincingly that, the high-order sliding mode control has little chattering, high control accuracy and strong
robustness.
© 2020 Shanghai Jiaotong University. Published by Elsevier B.V.
This is an open access article under the CC BY-NC-ND license. (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Keywords: Doubly salient permanent magnet machine; Torque ripple; Chattering; High-order sliding mode control; Super-twisting algorithm.