Motor
AssigneeJohnson Electric S.A.
InventorsYue LI, Bao Ting Liu, Ji Dong Chai
Life of this patent
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Abstract
A motor comprises: a stator having a stator core and field windings; brush gear including a plurality of brushes, a rotor comprising a shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft adjacent the rotor core and rotor windings wound about teeth of the rotor core and connected to the commutator. The stator core comprises a yoke, 2P primary poles about which the field windings are wound, and 2P auxiliary poles. A control device controls the electrical connecting state of the field windings and the brushes so that 2P or 4P magnetic poles are selectively formed on the stator when the field windings are electrified. P is an integer equal to or greater than 1.
Claims8
An electrical motor comprising:
- a stator having a stator core and field windings;
- the stator core comprises a yoke, 2P primary poles on which the field windings are wound, and 2P auxiliary poles, the 2P primary poles and 2P auxiliary poles extend inwardly from the yoke, are alternately arranged in the circumferential direction of the yoke
- a rotor having a shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft, and rotor windings wound about teeth of the rotor and connected to the commutator;
- brush gear having a plurality of brushes arranged to make sliding electrical contact with the commutator;
- a control device for controlling the electrical connecting state of the field windings and the brushes so that 2P or 4P magnetic poles are selectively formed on the stator when the field windings are electrified, and
- P is an integer equal to or greater than 1.
Dependencies are inferred from the claim text.