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

Claim 6:
7. A method for operating the drive system according to claim 1, the method in a first operating mode comprising:
supplying the at least one electric traction motor, or the plurality of electric traction motors, with electric power to generate traction, the rotational speed, the velocity, the torque and/or the position of the rotor of the electric traction motor, or of at least one of the electric traction motors, being controlled, while the vehicle is moving, based on
electrical output alternating quantities of the at least one traction power converter, by closed-loop and/or open-loop control, and/or
at least one quantity that is influenced by an electrical state and/or a magnetic state of the electric traction motor or 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(s),
the method in an at least second operating mode, during a standstill state of the vehicle, comprising:
detecting a rotational movement of at least one wheel of the vehicle, by evaluating signals of at least one detection unit suitable for detecting a rotational movement of a wheel, the at least one detection unit not detecting any electrical output alternating quantity of the at least one traction power converter and not detecting any quantity that is influenced by an electrical state and/or a magnetic state of the 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
detecting 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.