Motor
AssigneeJohnson Electric S.A.
InventorsYue Li, Bao Ting Liu, Ji Cheng Pan, Mao Xiong Jiang, Yong Qiang Song, Ji Dong Chai
Life of this patent
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Abstract
A motor has a stator and a rotor. The stator has 2P poles wherein P is an integer greater than one. The rotor has a shaft, a rotor core and a commutator fixed to the shaft. The commutator has m segments where m is an even integer greater than P. Every two adjacent segments are electrically connected by a winding unit so that the rotor winding comprises m winding units with at least one of the winding units comprising P coils connected in series; and each coil of each winding unit is directly connected to a corresponding two segments.
Claims21
A motor comprising a stator and a rotor, the stator comprising 2P poles where P is an integer greater than one, the rotor comprising a shaft, a rotor core and a, commutator fixed onto the shaft,
- wherein the commutator comprises m segments where m is an even integer greater than P, every two adjacent segments being electrically connected together by a winding unit so that the rotor winding comprises m winding units;
- at least one of the winding units comprising P coils connected in series;
- each coil of each winding unit is directly connected to a corresponding two segments;
- and
- wherein the m winding units comprise:
- one winding unit comprising only one coil;
- P−1 winding units each of which comprise P+1 coils connected in series;
- and
- m-P winding units each of which comprise P coils connected in series.
A motor comprising a stator and a rotor, the stator comprising 2P poles where P is an integer greater than one, the rotor comprising a shaft, a rotor core and a commutator fixed onto the shaft,
- wherein the commutator comprises m segments where m is an even integer greater than P, every two adjacent segments being electrically connected together by a winding unit so that the rotor winding comprises m winding units;
- at least one of the winding units comprising P coils connected in series;
- each coil of each winding unit is directly connected to a corresponding two segments;
- and
- wherein for a winding unit connected to first segment ZX and an adjacent second segment ZX+1 and comprising more than one coil, every two adjacent coils of the winding unit is directly connected to a shared segment ZY which is under the same polarity as the first segment ZX or the second segment ZX+1.
A motor comprising a stator and a rotor, the stator comprising 2P poles where P is an integer greater than one, the rotor comprising a shaft, a rotor core and a commutator fixed onto the shaft,
- wherein the commutator comprises in segments where in is an even integer greater than P, every two adjacent segments being electrically connected together by a winding unit so that the rotor winding comprises in winding units;
- at least one of the winding units comprising P coils connected in series;
- each coil of each winding unit is directly connected to a corresponding two segments;
- all coils of the same winding unit have the same winding direction;
- and
- wherein for a first winding unit connected to the first segment ZX and the adjacent second segment ZX+1, and a second winding unit connected to the second segment ZX+1 and the adjacent third segment ZX+2, the winding direction of each coil of the first winding unit is opposite to the winding direction of each coil of the second winding unit.
Dependencies are inferred from the claim text.