Method for operating an electric motor
AssigneeGKN Sinter Metals Engineering GmbH
InventorsMaurice Andree, Hong Giang To, Nils Bornemann
Life of this patent
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Abstract
A method for operating an electric motor, the electric motor comprising at least one first stator with at least three coils and a rotor with at least two magnets, the first stator and the rotor being adjacently arranged in an axial direction, and the coils being adjacently arranged in a peripheral direction. The electric motor is operated at least in the following two states: a) in a first state, the coils are operated by respectively different phases of a three-phase current, and the rotor is rotated about an axis of rotation; and b) in a second state, the coils are operated by an equal-phase alternating current.
Claims10
A method for operating an electric motor, wherein the electric motor has at least one first stator with at least three coils and a rotor with at least two magnets;
- wherein the at least one first stator and the rotor are arranged one next to the other along an axial direction, wherein the at least three coils are arranged one next to the other along a circumferential direction, each coil of the at least three coils having a core which extends starting from a first end to a second end of the at least one first stator in which the rotor is arranged adjacent to the second end;
- wherein an electrically conductive body is arranged in a radial direction at least within or outside the at least one first stator, the electrically conductive body extending along a circumferential direction completely and along an axial direction up to the first end, the method comprising:
- operating the electric motor at least in two states:
- a) in a first state, the at least three coils are operated with respective different phases of a three-phase current and the rotor is made to rotate about a rotational axis;
- b) in a second state, the at least three coils are operated with an alternating current with the same phase during which the electrically conductive body is heated by induction.
Dependencies are inferred from the claim text.