Demagnetization of the rotor of an externally excited synchronous machine
AssigneeAudi AG
InventorsMaximilian Schiedermeier, Stephan Brüske
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Abstract
The present disclosure relates to a circuit device for demagnetizing the rotor of an externally excited synchronous machine and to a method for operating the circuit device.
Claims10
A circuit device for demagnetizing a rotor of an externally excited synchronous machine, comprising at least one circuit connected to poles of a rotor winding of the externally excited synchronous machine and having a diode, a capacitor connected downstream of the diode, and a first switch, wherein the rotor winding, the diode, the capacitor, and the first switch are electrically connected in series, and wherein, when the first switch is closed, a current of the rotor winding flows through the diode into the capacitor.
A method for demagnetization of a rotor of an externally excited synchronous machine, the method comprising:
- providing at least one switching device having a diode, a capacitor connected downstream of the diode, and a first switch, wherein the at least one switching device is electrically conductively connected to poles of at least one rotor winding of the externally excited synchronous machine, wherein the at least one rotor winding, the diode, the capacitor, and the first switch are electrically connected in series, and wherein, when the first switch is closed, a current of the at least one rotor winding flows through the diode into the capacitor;
- and
- transferring electromagnetic energy stored in the rotor winding into the capacitor of the at least one switching device.
Dependencies are inferred from the claim text.