Practical Implementation of Novel Robust Position Control Scheme for Synchronous Reluctance Motor

Abstract

A variable structure robust position controller is presented for a three-phase synchronous reluctance motor. Linear control and variable structure control and pulse-width modulation generation are combined. These provide robust, fast, and accurate position control without the penalty of high chattering. Schemes, including conventional sliding-mode control and the proposed scheme, are tested under parameter variations, and sudden perturbations are applied to the system at a specific time, then compared. This scheme uses both advantages of traditional variable structure control methods and linear methods. The disadvantages of each method, such as chattering and parameter sensitivity, are minimized. Results demonstrate that the proposed technique preserves the classical linear position control merits, while both the steady-state and transient behavior are significantly improved in terms of robustness, accuracy, and low ripple. The results also prove that the position reference command is perfectly tracked in spite of motor parameter uncertainties and load torque disturbance in control of the system that uses the new schemes.

Keywords:

• variable structure
• synchronous reluctance machine
• position control
• non-linear control
• robust
• non-linear
• disturbance
• perturbation
• torque
• position control
• speed control

Additional information

Notes on contributors

Mohammad Nabipour

Mohammad Nabipour received the B.Sc. and M.Sc. degrees in electrical engineering in the field of power and electrical machines from the Isfahan University of Technology, Isfahan, Iran, in 2009 and 2011, respectively. He is currently with the Chamran University of Ahvaz. His research interests include electrical machines and drives, electromechanical energy conversion, power electronics, and power quality in power systems.

Seyyed Mohammad Madani

Seyyed Mohammad Madani (S'97–M'03) received the B.Sc. degree from the Sharif University of Technology, Tehran, Iran, in 1989, the M.Sc. degree from the University of Tehran, Tehran, in 1991, and the Ph.D. degree from the Eindhoven University of Technology, Eindhoven, the Netherlands, in 1999, all in electrical power engineering. From 2000 to 2003, he was an Associate Researcher in Texas A&M University. From 2003 to 2011, he worked at the University of Puerto Rico, University of Wisconsin at Madison, and Isfahan University of Technology as Assistant Professor. He is currently an Assistant Professor at the University of Isfahan, Isfahan, Iran. His research interests include electrical machines, electric drives, and power electronics.

Hosein Abootorabi Zarchi

Hosein Abootorabi Zarchi received the M.S. and Ph.D. degrees from the Isfahan University of Technology, Isfahan, Iran. He was a Visiting Ph.D. Student with the Control and Automation Group, Denmark Technical University, Denmark, from May 2009 to February 2010. He is currently an Assistant Professor in the Department of Electrical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran. His research interests include renewable energies, electrical machines, and applied nonlinear control in electrical drives.