Abstract: The invention concerns a starter/generator for an internal combustion engine (1), especially that of a motor vehicle, with an electric rotary-field machine (4), which exercises the starter and generator function; and at least one invertor (17) for generating the voltages and/or currents of variable frequency, amplitude and/or phase required for the magnetic fields of the electric machine (4); wherein the electric machine (4) starts the internal combustion engine (1) by merging in from standstill.

Abstract: Drive system, especially for a motor vehicle, with a drive assembly, especially an internal combustion engine (1), an electric machine (4) and an antislip control, in which the (one) electric machine (4) is designed such that it can produce a reduction of drive slip, in particular by braking action and/or—when the electric machine (4) is acting as a coupling—by clutch slip action.

Abstract: The invention concerns a starter/generator for an internal combustion engine (1), especially that of a motor vehicle, with an electric rotary-field machine (4), which exercises the starter and generator function; and at least one invertor (17) for generating the voltages and/or currents of variable frequency, amplitude and/or phase required for the magnetic fields of the electric machine (4); wherein the electric machine (4) starts the internal combustion engine (1) by merging in from standstill.

Abstract: The invention concerns a drive system, especially for a motor vehicle, with a drive assembly, especially an internal combustion engine (1), and at least one electric machine (4) for active reduction of rotational nonuniformities, acting on the drive assembly, in particular, its drive shaft (10) or a shaft coupled or which can be coupled to it, wherein at least one sensor (16, 32) of the drive system and/or at least one quantity derived from sensor information serves both to control the drive assembly and also to control the electric machine (4), and/or wherein a control unit (31 and 33, respectively) responsible for the control of the electric machine (4) or of the drive assembly also partly or entirely controls the drive assembly or the electric machine (4), respectfully. The invention is also oriented to a method of operating such a drive system.

Abstract: The invention concerns a system for active reduction of radial vibrations of a rotating shaft (4), especially the drive shaft of an internal combustion engine (1), with at least one active electromagnetic device (7; 10; 15, 16), which is configured and controlled such that it applies radial forces to the shaft (4), which counteract the radial vibrations of the shaft (4).

Abstract: An electric motor with an internal rotor (10), which comprises a free intal chamber (12), and a stator (14) disposed at a radial spacing from the rotor (10) has a more compact construction and can be assembled more easily. The electric motor is characterized in that at least part of a gear (16) is disposed in the free internal chamber (12) of the rotor (10).