Abstract: A method for laterally stabilizing a single-tracked motor vehicle, driven with the aid of an electric motor, that is in a vertically aligned state and at a standstill. The front wheel of the motor vehicle has a steering angle in which the electric motor is controlled in such a way that it exerts drive torques on the motor vehicle that act in alternation in the forward direction and in the reverse direction.

Abstract: The invention relates to a drive system, in particular for a vehicle, comprising a fuel cell unit for generating electric energy, a secondary battery for storing electric energy, an electric machine with windings, and an inverter for actuating the electric machine. The inverter is designed as a 3-level inverter and has multiple electronic switches, diodes, a plus pole, a minus pole, and a neutral pole. The fuel cell unit and the secondary battery are connected in series and are connected to the poles of the inverter. The invention also relates to a method for heating a drive system according to the invention, wherein the switches of the inverter are actuated such that a short-circuit current path is produced between the poles of the inverter to which the fuel cell unit is connected.

Abstract: A method for laterally stabilizing a single-tracked motor vehicle, driven with the aid of an electric motor, that is in a vertically aligned state and at a standstill. The front wheel of the motor vehicle has a steering angle in which the electric motor is controlled in such a way that it exerts drive torques on the motor vehicle that act in alternation in the forward direction and in the reverse direction.

Abstract: The invention relates to a drive system (10), in particular for a vehicle, comprising a fuel cell unit (12) for generating electric energy, a secondary battery (14) for storing electric energy, an electric machine (20) with windings (21, 22, 23), and an inverter for actuating the electric machine (20). The inverter (30) is designed as a 3-level inverter and has multiple electronic switches (S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12), diodes (D1, D2, D3, D4, D5, D6, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X12), a plus pole (37), a minus pole (35), and a neutral pole (36). The fuel cell unit (12) and the secondary battery (14) are connected in series and are connected to the poles (35, 36, 37) of the inverter (30).

Abstract: The invention relates to an electric drive system and to a method for operating an electric machine, in which the electric machine is controlled in a first operating mode using a first voltage. In order to temporarily increase the power, the electric machine can also be controlled in a second operating mode, in which the voltage used for the control is increased by an additional energy source.

Abstract: A device and a method for recovering energy during a braking operation of a hybrid vehicle which includes an electric machine in addition to an internal combustion engine, as well as a hydraulic or pneumatic brake system which is operated by a foot brake pedal). The recovery device includes a pedal position transducer which detects at least an actuation of the foot brake pedal in an initial range, and an electronic system which evaluates the signal of the pedal position transducer and activates the electric machine accordingly in generator mode when the driver actuates the foot brake pedal in the initial range.

Abstract: A circuit configuration for supplying the control electronics in an electrical machine is specified, which includes a passive transformer circuit, which is powered by a phase current IP of the electrical machine and which generates an auxiliary voltage VA that is used for supplying the output stage of the electrical machine if no battery is present or if the battery is defective or discharged.

Abstract: A three-phase generator that has a plurality of stator windings, a rectifier system connected with the stator windings, an exciter winding, a generator controller, and an additional circuit that effects an increase in voltage. This additional circuit is a passively operated booster circuit that is integrated into the generator and that has no controlled components.

Abstract: A circuit configuration for supplying the control electronics in an electrical machine 10 is specified, which includes a passive transformer circuit 20, which is powered by a phase current IP of the electrical machine 10 and which generates an auxiliary voltage VA that is used for supplying the output stage of the electrical machine if no battery is present or if the battery is defective or discharged.

Abstract: A three-phase generator that has a plurality of stator windings, a rectifier system connected with the stator windings, an exciter winding, a generator controller, and an additional circuit that effects an increase in voltage. This additional circuit is a passively operated booster circuit that is integrated into the generator and that has no controlled components.

Abstract: A circuit arrangement for an electrical machine which is connected with at least one phase terminal of the electrical machine, has at least one passive charge pump connectable directly with phase windings of the electrical machine and having another terminal connected through further electronic means with an input/output, at which a switching on/switching off signal for a current supply is produced.

Abstract: The converter comprises a plurality of bridge circuits (1, 2, 3, . . . . , n), connected to phase windings (4, 5, 6, 7) of a machine, of which each circuit has a plurality of electrically controllable switches (11, 12, 21, 22, 31, 32, . . . , n1, n2) and one buffer memory embodied as a capacitor (15).

Abstract: A circuit arrangement for an electrical machine which is connected with at least one phase terminal of the electrical machine, has at least one passive charge pump connectable directly with phase windings of the electrical machine and having another terminal connected through further electronic means with an input/output, at which a switching on/switching off signal for a current supply is produced.

Abstract: The electrical machine, especially a three-phase generator, has a stationary stator (21); a rotatable rotor having an excitation coil (28), a rotary transformer (29) having a primary winding (30) and a secondary winding (31) on respective soft ferrite cores and magnetically coupled with each other via an air gap (38) and a control circuit (40) for loading the primary winding (30) of the rotary transformer (29) with an alternating current. The control circuit (40) includes an input-side current limiting circuit (46), whereby an integrated temperature control is obtained in cooperation with the soft ferrite cores of the primary and secondary windings according to the Curie effect.

Abstract: The electrical machine, especially a three-phase generator, has a stationary stator (21); a rotatable rotor having an excitation coil (28), a rotary transformer (29) having a primary winding (30) and a secondary winding (31) on respective soft ferrite cores and magnetically coupled with each other via an air gap (38) and a control circuit (40) for loading the primary winding (30) of the rotary transformer (29) with an alternating current. The control circuit (40) includes an input-side current limiting circuit (46), whereby an integrated temperature control is obtained in cooperation with the soft ferrite cores of the primary and secondary windings according to the Curie effect.