Traction drive

Details Traction drive Traction drive

H - Electricity

02

P

H02P 6/24 (2006.01) B60L 7/02 (2006.01)

Patent

CA 2470349

The invention relates to a traction drive comprising a traction power converter (4) and a permanent-field synchronous motor (6), said traction power converter (4) comprising at least one pulsed power converter (22) on the machine side. According to the invention, the permanent-field synchronous motor (6) is respectively connected to an input of a commutator (30) on the terminal side, the outputs of said commutator being respectively connected to an output of the pulsed power converter (22) and to a connection of the star- connected braking resistances (28). In this way, a fail-safe electrical brake which is independent from the power inverter can be obtained for a set of traction wheels of a rail vehicle, such that a mechanical brake is not required.

L'invention concerne un entraînement de traction comportant un convertisseur de courant statique de traction (4) et un moteur synchrone à excitation permanente (6), ledit convertisseur de courant statique de traction (4) présentant côté machine au moins un convertisseur de courant pulsé (22). Selon l'invention, le moteur synchrone à excitation permanente (6) est raccordé côté bornes à une entrée d'un commutateur (30) dont les sorties sont raccordées respectivement à une sortie du convertisseur de courant pulsé (22) et à une borne de résistances de freinage (28) montées en étoile. Ainsi, il est possible de mettre en oeuvre un frein électrique fiable indépendant de l'onduleur, destiné à un essieu moteur d'un véhicule sur rails, de façon à s'affranchir totalement d'un frein mécanique.

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