Modelling and identification of switched reluctance machine inductance

ABSTRACT

Identification of phase self-inductance is a central step in control and development of Switched Reluctance Machine (SRM) model because the voltage and torque equation are functions of the phase self-inductance. The SRM operates primarily in the saturation region because the power factor is lower in the linear region, which makes the SRM modelling difficult to achieve. The strong nonlinearity of this machine must be taken into consideration by appropriate identification of the inductance parameters. This paper presents a new method for analytical modelling and identification of nonlinear inductance at standstill tests. We have shown that our electrical model of SRM can be described by Hammerstein model as a typical nonlinear model with a specific structure. The proposed method differs substantially from the existing used to identify the inductance of SRM. The results of this analytical approach are compared with those obtained using magnetostatic finite element method and experimental measurement. The comparison results show good accuracy of the identified model.

KEYWORDS:

• Analytical identification
• hammerstein model
• nonlinear inductance
• SRM modelling
• standstill test

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

A. Brouri

Adil BROURI In 2000, he obtained the Aggregation of Electrical Engineering and, in 2012, he obtained a Ph.D. in Automatic Control from the University of Mohammed 5, Morocco. He has been Professeur-Agrege for several years. Since 2013 he joined the ENSAM (Higher National School of Arts and Trades), My Ismail University in Meknes-Morocco. He obtained his HDR degree in 2015 at the ENSAM-Meknes (My Ismail University). His research interests include nonlinear system identification, nonlinear control and SRM. He published several papers on the topics of identification of nonlinear system. Prof. Adil BROURI joined the research team “SECNDCM” and the L2MC (Mechanical, Mechatronics and Control) Laboratory as a permanent member.

L. Kadi

Laila KADI Is an engineer and conducting research activity on SRM, nonlinear control and identification under the supervision of Professor Adil Brouri at ENSAM, Moulay Ismail University,L2MC laboratory, SECNDCM team, Morocco.

A. Tounzi

Abdelmouniam TOUNZI Graduated from University of Nancy, France (master’s degree in 1989) and Polytechnic National Institute Lorraine (INPL), France (Ph.D. in 1993). Currently, he is a full professor at University Lille 1 (USTL), France, and a member of the L2EP (Laboratory of Power Electronics and Electrical Engineering) and is a member of the IEEE. His research areas are the design and modeling of electromagnetic systems.

A. Ouannou

Abdelmalek OUANNOU is currently completing his PhD in control of nonlinear systems under the supervision of Professor Adil Brouri at ENSAM, Moulay Ismail University, L2MC laboratory, SECNDCM team, Morocco.

J. Bouchnaif

Jamal bouchnaif is a Professor of Mohammed First University and the head of the Laboratory of Electrical Engineering and Maintenance, Higher School of Technology, Morocco. His research interests include Electronic Engineering and control Systems Engineering.