Direct torque control of PMSM using sliding mode backstepping control with extended state observer. (February 2018)

• Record Type: Journal Article
• Authors: Ning, Bowen; Cheng, Shanmei; Qin, Yi
• Is Part Of: Journal of vibration and control. Volume 24:Number 4(2018)
• Page Start: 694
• Page End: 707
• Publication Date: 2018-02
• Subjects: Permanent magnet synchronous motor -- direct torque control -- sliding mode control -- backstepping control -- extended state observer; Vibration -- Periodicals; Damping (Mechanics) -- Periodicals; 620.3
• DOI: 10.1177/1077546316650097
• Languages: English
• ISSNs: 1077-5463

Abstract

Based on the nonlinear characteristics of permanent magnet synchronous motor (PMSM), a nonlinear speed and direct torque control (DTC) using sliding mode backstepping method for PMSM is presented in this paper. The sliding mode speed controller is implemented with exponential reaching law to improve the robustness of the system, and further a step-by-step recursive design for backstepping torque and flux controllers is presented. The system stability with proposed scheme is mathematically proved using Lyapunov stability criteria. At the same time, the load torque is observed with the extended state observer (ESO), and is fed-forward to the controller for rejecting the load disturbance and to mitigate the chattering affect due to the sliding mode controller. Finally, simulation test results are demonstrated to support the effectiveness and feasibility of the proposed strategy.