A Simple Stator Flux Oriented Induction Motor Control

Abstract

This paper presents a novel stator flux oriented induction motor control scheme. It utilises a sliding-mode controller in the stator flux control loop. The existence condition of sliding mode control is derived, and chattering suppression at steady-state is also considered. A proportional controller is used in the torque control loop to simplify the control scheme without compromising performance. Design formulas are given for the controller parameters. They are not based on the mathematical motor model but only need rated parameters. Experimental results are shown to prove the effectiveness of the control strategy in transient and steady state operations.

Keywords:

• Induction motors
• Sliding mode control
• Drives
• Vector control

Additional information

Notes on contributors

Francesco Cupertino

Francesco Cupertino was bom in Fasano, Italy, on December 1972. He received the Laurea degree and the PhD degree in Electrical Engineering from the Technical University of Bari, Italy, in 1997 and 2001 respectively. From 1999 to 2000 he was with PEMC research group, University of Nottingham, UK. Since July 2002 he is a Assistant Professor at Technical University of Bari, Electrical and Electronic Engineering Department. He teaches a course in Electrical Drives at Technical University of Bari and at the University of Lecce, Italy. His main research interests cover the intelligent motion control and fault diagnosis of electrical machines. He is the author or coauthor of more than 40 scientific papers on these topics.

Giuseppe L. Cascella

Giuseppe Leonardo Cascella was bom in Bari, Italy, on September 1975. He received the Laurea degree with honors in Electrical Engineering from the Politecnico di Bari, Italy, in 2001. He was a research engineer at the Getrag GmbH Systemtechnik (Germany), working on the automatic trasmission. In 2003, he was awarded the Marie Curie Fellowship at the School of Electrical and Electronic Engineering, University of Nottingham (UK) where he worked for one year on the research project “Self-Commissioning of Electric Drives with Genetic Algorithms”. At present, he is a PhD student of the Politecnico di Bari. His main interests are microprocessor control, modeling and self-commissioning of electric drives. He is an IEEE member, and Registered Professional Engineer in Italy.

Luigi Salvatore

Luigi Salvatore was bom in Lecce, Italy, on 4 March 1945. He received the degree in Electrical Engineering from the University of Bari, Italy, in 1970. He joined the Converters, Electrical Machines and Drives Research Group at the Dipartimento di Elettrotecnica ed Elettronica of the University of Bari in 1976. Since 1987 he teaches a course in Electrical Machines. Since 1991 he joined the Politecnico di Bari. Since 1995 he also teaches a course in Electrical Drives at the Polytechnic of Bari. From 1993 to 1999 he was an Adjunct Associate Professor at University of Lecce, where taught a course in Automatic Control. He is presently full professor at the Dipartimento di Elettrotecnica ed Elettronica of the Politecnico di Bari. His present interests include electrical machine modelling, vector control of electrical drives, state and parameter estimation, Kalman filtering, AI-based control of electrical drives, rapid control prototyping of digital controllers, diagnostics of electrical machines and drives. He is a member of the Italian Electrical and Electronic Association.

Nadia Salvatore

Nadia Salvatore was bom in Bari, Italy, on May 1975. She received the Laurea degree with honors in Electrical Engineering from the Politecnico di M Bari, Italy, in 2002. Since 2003 she a PhD student currently working at Electrical Machine and Drives Lab. of Politecnico di Bari, Italy. Initially, she participated in the Italian research project: “Signal Processing for Diagnostic of Electrical Machines fed by Power Converters”. During last year she worked as researcher at the School of Electric and Electronic Engineering of the University of Nottingham (UK). Her primary research interest is intelligent modelling, diagnosis and control of induction motor drives. She is an IEEE Student Member, and Registered Professional Engineer in Italy.