Method and regulator for electrical reluctance machines

H - Electricity – 02 – P

Patent

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H02P 6/18 (2006.01) H02P 25/08 (2006.01)

Patent

CA 2300820

The invention relates to a process for estimating an instantaneous resistance in a phase winding in a reluctance machine. The process comprises the steps of: receiving a signal (Udm) indicating a voltage (UW) across at least one phase winding; receiving a signal (iWm) indicating a current (iw) through the phase winding; estimating a magnetic flux in response to the voltage signal and the current signal; estimating an instantaneous resistance (RW) in the phase winding in according with a phase relation between the current signal (iWm) and the magnetic flux signal (est). The invention also relates to a method for controlling an electrical machine and a drive system for performing the method.

La présente invention concerne un procédé permettant d'estimer la résistance instantanée d'un enroulement de phase de moteur électrique. Ce procédé comporte plusieurs opérations. Réception d'un signal (U¿dm?) caractéristique d'une tension (U¿W?) aux bornes d'au moins un enroulement de phase. Réception d'un signal (i¿Wm?) caractéristique d'une intensité (i¿w?) dans l'enroulement de phase. Estimation d'un flux magnétique en réaction au signal de tension et au signal d'intensité. Estimation d'une résistance instantanée (R¿W?) dans l'enroulement de phase en fonction d'une relation de phase entre le signal d'intensité (i¿Wm?) et le signal de flux magnétique (?¿est?). L'invention, qui concerne également un procédé de régulation d'un moteur électrique, concerne aussi une logique d'entraînement permettant la mise en oeuvre du procédé.

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