A new rotor position detection method using bifilar windings and resonant circuit in SRM drive

This paper presents a new method for indirect sensing of rotor position in a switched reluctance motor using bifilar windings in a resonant circuit. The detection method stems from the fact that the changes in sine wave magnitude produced in a RLC resonant circuit by motor variable phase inductance can be used to detect the rotor position. The proposed method is applicable at standstill as well as the running mode. The use of bifilar windings for rotor position detection makes the control circuit to be completely isolated from main winding and the power transistors. It also results in simple hardware which minimizes the cost of drive circuitry. The proposed method was implemented on a 3-phase 6/4 SRM with bifilar windings and the experimental results demonstrated the accuracy and function ability of this method.

[1]  Erkan Mese,et al.  Sensorless position estimation for variable-reluctance machines using artificial neural networks , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[2]  Iqbal Husain,et al.  A sliding mode observer based controller for switched reluctance motor drives , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[3]  Iqbal Husain,et al.  Rotor position sensing in switched reluctance motor drives by measuring mutually induced voltages , 1992, Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting.

[4]  Iqbal Husain,et al.  Four quadrant and zero speed sensorless control of a switched reluctance motor , 2002 .

[5]  F. Filippetti,et al.  Position sensorless control of a SRM drive using ANN-techniques , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[6]  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.

[7]  B. Fahimi,et al.  Four-quadrant position sensorless control in SRM drives over the entire speed range , 2005, IEEE Transactions on Power Electronics.

[8]  E. Afjei,et al.  A New modified bifilar Drive Circuit for Switched Reluctance Motor , 2008, 2008 Joint International Conference on Power System Technology and IEEE Power India Conference.

[9]  R. Krishnan,et al.  Switched reluctance motor drives : modeling, simulation, analysis, design, and applications , 2001 .

[10]  I. Husain,et al.  Four quadrant and zero speed sensorless control of a switched reluctance motor , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[11]  Adrian David Cheok,et al.  Sensorless rotor position estimation algorithm for switched reluctance motors using fuzzy logic , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[12]  Iqbal Husain,et al.  Design trends and trade-offs for sensorless operation of switched reluctance motor drives , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[13]  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.

[14]  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.