Elimination of position sensors in switched reluctance motor drives: state of the art and future trends

This paper covers the range of topics related to sensorless control of switched reluctance motor (SRM) drives from their fundamentals to their limitations and state of the art and future trends. This should help the reader to develop a systematic understanding of the sensorless techniques that have been developed over the past two decades. The inherent vulnerability to mechanical failures, extra cost, and size associated with external position sensors such as optical encoders, resolvers, and custom-designed Hall-effect sensors has motivated many researchers to develop sensorless control techniques for SRM drives. Ideally, it is desirable to have a sensorless scheme, which uses only terminal measurements and does not require additional hardware or memory while maintaining a reliable operation over the entire speed and torque range with high resolution and accuracy. Advances in the development of low-cost digital-signal-processor-based microcontrollers have paved the way for the fulfillment of this objective. It is, furthermore, our view that the existing trends in the development of more powerful processors will ultimately replace the concept of sensorless controls with the concept of eliminating the need for position sensing, a concept that will further revolutionize the motor drive technology.

[1]  H. Zelaya De La Parra,et al.  Application of a full-order extended Luenberger observer for a position sensorless operation of a switched reluctance motor drive , 1996 .

[2]  G. Gallegos-Lopez,et al.  High-grade position estimation for SRM drives using flux linkage/current correction model , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[3]  Roland J. Hill,et al.  Detection of Rotor Position in Stepping and Switched Motors by Monitoring of Current Waveforms , 1985, IEEE Transactions on Industrial Electronics.

[4]  I. Husain,et al.  Elimination of discrete position sensor and current sensor in switched reluctance motor drives , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[5]  N. Ertugrul,et al.  A model free fuzzy logic based rotor position sensorless switched reluctance motor drives , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[6]  S.R. MacMinn,et al.  Flux-current methods for SRM rotor position estimation , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

[7]  Mehrdad Ehsani,et al.  Improvement of the accuracy and speed range in sensorless control of switched reluctance motors , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[8]  C. C. Chan,et al.  Study of starting performances of switched reluctance motors , 1995, Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95.

[9]  Mehrdad Ehsani,et al.  New commutation methods in switched reluctance motors based on active phase vectors , 1994, Proceedings of 1994 Power Electronics Specialist Conference - PESC'94.

[10]  R. D. Lorenz,et al.  Sensorless control of a SRM at low speeds and standstill based on signal power evaluation , 1998, IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200).

[11]  Jeffrey H. Lang,et al.  State observers for variable-reluctance motors , 1990 .

[12]  M. Ehsani,et al.  New modulation encoding techniques for indirect rotor position sensing in switched reluctance motors , 1992, Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting.

[13]  Bernard Multon,et al.  Sensorless rotor position analysis using resonant method for switched reluctance motor , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[14]  Barry W. Williams,et al.  Sensorless position detection using neural networks for the control of switched reluctance motors , 1999, Proceedings of the 1999 IEEE International Conference on Control Applications (Cat. No.99CH36328).

[15]  J.H. Lang,et al.  A simple motion estimator for variable-reluctance motors , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[16]  Longya Xu,et al.  Accurate rotor position detection and sensorless control of SRM for super-high speed operation , 2000, APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058).

[17]  Nobuyuki Matsui,et al.  Developing a sensorless approach for switched reluctance motors from a new analytical model , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[18]  Longya Xu,et al.  Eliminating starting hesitation for reliable sensorless control of switched reluctance motors , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[19]  Sanjib Kumar Panda,et al.  Comparison of two techniques for closed-loop drive of VR step motors without direct rotor position sensing , 1991 .

[20]  Mehrdad Ehsani,et al.  Inductance based position encoding for sensorless SRM drives , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).

[21]  S.R. MacMinn,et al.  Application of sensor integration techniques to switched reluctance motor drives , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.