ELIMINATION OF DISCRETE POSITION SENSOR AND CURRENT SENSOR IN SWITCHED RELUCTANCE MOTOR-DRIVES Conference Paper uri icon

abstract

  • Shaft position sensing is essential in switched reluctance motors (SRM) in order to synchronize the phase excitation pulses to the rotor position. In order to implement closed-loop torque control, current sensors are also unavoidable. These sensors can constitute a substantial portion of the total system cost and tend to reduce system reliability. A low-cost position sensing scheme using stator inductance measurement is presented. An analog electronic technique can be used to measure the inductance of a nonconducting phase by using a linear frequency-modulated (FM) converter. The output of the FM converter is decoded to get the shaft position signal. The control functions and converter switching signals are processed in a low-cost microcontroller. The discrete current sensors for closed-loop operation have been eliminated by using MOS-gated power switches with integrated current sensing capability. The combination of the above two schemes resulted in a totally sensorless SR motor drive.

name of conference

  • Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting

published proceedings

  • CONFERENCE RECORD OF THE 1990 IEEE INDUSTRY APPLICATIONS SOCIETY ANNUAL MEETINGS, PARTS 1 AND 2

author list (cited authors)

  • EHSANI, M., HUSAIN, I., & KULKARNI, A. B.

citation count

  • 21

complete list of authors

  • EHSANI, M||HUSAIN, I||KULKARNI, AB

publication date

  • January 1990