Sensorless control of switched reluctance motor drive based on BEMF calculation Conference Paper uri icon


  • There has been several approaches to the problem of sensorless rotor position detection in switched reluctance motors but the great majority of them are not able to cover all constant torque region in SRM's torque-speed profile since they are mainly based on voltage equation integration to estimate the flux or neglecting motional Back Electro Motive Force or BEMF, in that equation. This paper proposes a method to the sensorless control of SRM to cover the specified region efficiently. A novel method to estimate Back EMF online based on current waveform is introduced. A position estimation equation is derived based on the estimated BEMF and an analytical model for SRM. Then a commutation strategy is designed based on the position estimation equation. The proposed sensorless method has been implemented on Texas Instrument TMS320LF2407 fixed-point Digital Signal Processor and has been applied to a 1hp SRM test bed successfully.

name of conference

  • APEC 2002 - Applied Power Electronics Conference and Exposition

published proceedings

  • APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335)

author list (cited authors)

  • Salmasi, F. R., Fahimi, B., Gao, H., & Ehsani, M.

citation count

  • 9

complete list of authors

  • Salmasi, FR||Fahimi, B||Gao, H||Ehsani, M

publication date

  • January 2002