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A low cost, robust position sensorless control scheme for doubly-fed reluctance motor drives

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2 Author(s)
Liao, Y. ; Emerson Motor Co St. Louis, MO, USA ; Chiping Sun

A position sensorless control algorithm for the newly-developed doubly-fed reluctance motor (DFRM) drives is presented. The control makes use of 60 Hz terminal variables, which are easy to acquire and process, for estimation and control of the torque angle of the machine, while the speed of the system is given in an open-loop mode. The control is robust and suitable for variable-speed pump-type application. With this control, the required VA rating of the pulse width modulated (PWM) power converter is only 50% of that of the DFRM motor, and the motor can be started with full load torque. This control scheme has been successfully implemented on a 2 hp DFRM drive

Published in:

Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE

Date of Conference:

2-8 Oct 1993