Electric drive unit
1 Assignment
0 Petitions
Accused Products
Abstract
Electric drive units comprising a common active part having a stator and a rotor, which has windings and/or permanent magnets for a drive function and an energy transmission function, enable the rotor winding that is provided for energy transmission to be used to allow position detection at a low additional cost. For this purpose, a power converter in the rotor, which provides the output of electrical energy for the energy transmission function, impresses an alternating voltage into the rotor winding, said voltage being detected in the stator and allowing the rotor position to be determined.
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Citations
20 Claims
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1-10. -10. (canceled)
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11. An electric unit, comprising:
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a stator; a rotor, wherein the stator and the rotor form a drive system to drive the rotor and an energy transmission system to supply the rotor with electrical energy; a common active part for the drive system and the energy transmission system, wherein windings and optionally permanent magnets for both systems are provided; at least one rotor winding and at least one stator winding in the active part; a power converter in the rotor for the output of the electrical energy, wherein the power converter is designed to impress an alternating voltage for a position detection function onto the rotor winding; and a detection device in the energy supply system to detect a current component generated by the alternating voltage in the stator winding and for determination of the position of the rotor from the current component. - View Dependent Claims (14, 17, 20)
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Specification