Patent ID: 11952018
Assignee: BOMBARDIER TRANSPORTATION GMBH
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A drive system for a vehicle, the drive system comprising:
a plurality of electric traction motors, each of the electric traction motors being mechanically coupled to at least one drive wheel to generate traction;
at least one traction power converter, the at least one traction power converter being connected on an AC voltage side to at least one of the plurality of electric traction motors to supply the at least one electric traction motor with electric power;
a traction control unit for a closed-loop and/or an open-loop control of the at least one traction power converter, wherein the traction control unit being designed to control, by the closed-loop and/or the open-loop control, the at least one traction power converter while the vehicle is moving, based on electrical output alternating quantities of the at least one traction power converter,
wherein the traction control unit being designed to detect a rotational movement of at least one drive wheel of the vehicle while the vehicle is driving, in the process of detecting a rotational movement:
based on a change in the electrical output alternating quantities of the at least one traction power converter, and/or
based on at least one quantity that is influenced by an electrical state and/or a magnetic state of the at least one electric traction motor or at least one of the plurality of electric traction motors, wherein the state being dependent on a movement and/or position of a rotor of the at least one electric traction motor, and

wherein the traction control unit being designed, during a state of standstill of the vehicle,
to detect a rotational movement of at least one wheel of the vehicle based on an evaluation of signals of at least one detection unit, without the at least one detection unit detecting any electrical output alternating quantities of the at least one traction power converter or any quantity that is influenced by an electrical state and/or a magnetic state of the at least one electric traction motor or of at least one of the electric traction motors, the state being dependent on a movement and/or position of a rotor of the electric traction motor, and/or
to detect a rotational movement of at least one drive wheel of the vehicle based on a change in the electrical output alternating quantities of the at least one traction power converter.