Electric motor

H - Electricity – 02 – P

Patent

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Details

H02P 3/12 (2006.01) D01H 4/14 (2006.01) F16C 32/06 (2006.01) H02P 3/14 (2006.01) H02P 6/00 (2006.01)

Patent

CA 2616430

The invention relates to an electric motor (1), in particular for a textile machine, which can be operated as a generator if the supply voltage fails, comprising a rotor which is configured as the armature of the electric motor (1) and a motor circuit (3) for the phase control of the multiple-phase electric motor (1), which motor circuit (3) comprises a plurality of semiconductor components (4, 5, 6, 7, 8, 9, 10, 11), wherein the electric motor (1) can be short-circuited if a predefinable threshold value is passed during generator operation, wherein the short-circuiting if the threshold value is passed can be carried out by actuating one or more of the semiconductor components (4, 5, 6, 7, 8, 9, 10, 11) of the motor circuit (3) by way of a signal which represents the operating state.

L'invention concerne un moteur électrique (1) qui est destiné notamment à une machine textile et qui, en cas de défaillance de la tension d'alimentation, peut fonctionner comme générateur. Ce moteur électrique comprend un rotor conçu comme induit du moteur électrique (1), et un couplage moteur (3) qui est destiné à la commande de phase du moteur électrique polyphasé (1) et qui comporte plusieurs composants semi-conducteurs (4, 5, 6, 7, 8, 9, 10, 11). Lorsque le moteur électrique (1) en mode générateur dépasse une valeur limite prédéterminée, il peut être mis en court-circuit. La mise en court-circuit lors du dépassement de la valeur limite peut être effectuée par la commande d'au moins un des composants semi-conducteurs (4, 5, 6, 7, 8, 9, 10, 11) comportant le couplage moteur (3) par un signal reproduisant le mode de fonctionnement.

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