Method for braking electrically driven vehicles

Details Method for braking electrically driven vehicles Method for braking electrically driven vehicles

B - Operations, Transporting

60

L

B60L 7/24 (2006.01) B60L 7/06 (2006.01) B60L 7/26 (2006.01)

Patent

CA 2653018

The invention relates to a method for braking electrically driven vehicles, in particular rail vehicles. The invention is based on the object of configuring in an optimum way the behaviour of the brake system directly as a function of the system state, i.e. the operating conditions of the vehicle, such as for example the laden state of the vehicle, temperature of the engines and in particular of the magnets, as well as redundancy requirements, and therefore permit the fully functioning mechanical brake which is present in vehicles nowadays to be eliminated. The method for braking electrically driven vehicles which are equipped with spring-store-based friction brakes and whose motive drive is provided by means of permanently excited synchronous machines whose terminals are connected via switches to devices which generate a braking torque is characterized according to the invention in that an open-loop or closed-loop controller is activated and said controller connects the brake system of the engines which are present and the spring-store-based friction brakes into the circuit individually and successively as a function of the operating conditions of the vehicle and the required brake values.

L'invention concerne un procédé de freinage de véhicules électriques, notamment de véhicules ferroviaires. Elle a pour objet d'optimiser le comportement du système de freinage directement en fonction de l'état du système, c'est-à-dire des conditions de fonctionnement du véhicule, comme par exemple l'état de charge du véhicule, la température des moteurs et notamment des aimants, ainsi que des exigences de redondance, et donc de permettre d'éviter d'utiliser les freins mécaniques complets utilisés actuellement dans les véhicules. Le procédé de freinage de véhicules électriques munis de freins à friction basés sur l'accumulation de ressorts, et dont l'entraînement motorisé s'effectue avec des machines synchrones excitées en permanence, les bornes de la machine synchrone étant en liaison par le biais de commutateurs avec des dispositifs produisant un couple de freinage, est caractérisé selon l'invention en ce qu'une commande ou une régulation est activée pour lancer le freinage des moteurs présents et les freins à friction basés sur l'accumulation de ressorts de manière individuelle et successive, en fonction des conditions de fonctionnement du véhicule et des valeurs de freinage demandées.

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