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Determination of optimum operating frequency of a current-source inverter-controlled asynchronous machine by measurement of stator voltages

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4 Author(s)
de Fornel, B. ; Ã‰cole Nationale Supérieure d''Electrotechnique, d''Electronique, d''Informatique et d''Hydraulique de Toulouse, Laboratoire d''Electrotechnique et d''Electronique Industrielle, ERA 536 du CNRS, Toulouse, France ; Hapiot, J.C. ; Saubion, C. ; Trannoy, B.

Theory and experimental results are given, concerning a control law for a current-fed asynchronous machine, defining frequency on the basis of the machine's stator voltages. This law means that the speed sensor is no longer essential; it also allows estimation of rotor-current frequency and, hence, the rotation speed: An experimental model shows that the system is stable and also demonstrates good performances in the steady-state condition.

Published in:

Electric Power Applications, IEE Proceedings B  (Volume:130 ,  Issue: 3 )