Abstract: A drive unit for driving and starting a motor in the form of an internal combustion engine designed for driving a traction generator coupled to the motor.

Abstract: A drive unit for driving and starting a motor in the form of an internal combustion engine designed for driving a traction generator coupled to the motor.

Abstract: A traction control system, in particular a method for traction control for a rail vehicle is disclosed, which method predefines a torque setpoint value (Msetp) for a motor control unit, embodied as a torque control unit (3), by means of a wheel-slip control unit (1) and reduces the torque setpoint value (Msetp) by means of the wheel-slip control unit (1) when a predefinable threshold value of a differential rotational speed value (&Dgr;n), formed from a present rotational speed value (n) and a calculated reference rotational speed value, of a drive motor of a wheel set is reached. In addition, a stator frequency value (fS) is predefined for at least one drive motor, embodied as an asynchronous machine, of a wheel set of the rail vehicle, the stator frequency value (fS) being limited to a stator-frequency-dependent limiting value (fSG) when a maximum frictional engagement between the wheel set and rail is reached. In addition a device for carrying out the method is disclosed.

Abstract: In the case of a control system (140) for a drive having an asynchronous motor, in particular for a railroad vehicle, which control system (140) comprises a first control loop (141) for motor control, and a second control loop (142) which is connected to the first control loop (141) and has an adhesion controller (125), an improved control response is obtained in that the motor control system is designed as a stator frequency control system (127), and in that an actual torque value (M.sub.act) for the asynchronous motor is derived within the motor control system, and in that the two control loops (141, 142) are connected to one another in such a manner that the actual torque value (M.sub.act) from the motor control system is used as the actual value for the adhesion controller (125), and in that the adhesion controller (125) presets a nominal stator frequency value (f.sub.s,nom) for the motor control system.