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Torque control of a three-phase direct reluctance motor

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1 Author(s)
Girardin, M. ; Ind. Electron. Lab., Swiss Fed. Inst. of Technol., Lausanne, Switzerland

This paper describes an open-loop torque control for a three-phase direct reluctance motor which can generate high torque at low speed. The command strategy presented in this paper consists of feeding the motor with three-phase sinewave currents. The torque ripple at low speed is considerably reduced. Moreover, the reference currents of the motor are optimised by the use of a correction factor in such a manner that the ripple torque is minimised in steady-state conditions. The correction factor is stored once off-line and can be used on-line for any application. The acoustic noise level is also reduced by the proposed driving method

Published in:

Industrial Electronics, 1997. ISIE '97., Proceedings of the IEEE International Symposium on  (Volume:2 )

Date of Conference:

7-11 Jul 1997