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US 2016/0111930 A1Published application
Motor, method for driving motor, and drive controller for motor
AssigneeAsmo Co., Ltd.
InventorsYoshiaki Takemoto, Yoko Tateishi, Seiya Yokoyama, Yusuke Morimoto
Life of this patent
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Abstract
A motor includes a two-layer rotor and a two-layer stator. The two layer rotor includes an A-phase rotor and a B-phase rotor that are stacked together. When θ1 represents, in electric angle, an angle of the B-phase stator relative to the A-phase stator in a clockwise circumferential direction, and θ2 represents, in electric angle, an angle of the B-phase rotor relative to the A-phase rotor in a counterclockwise circumferential direction, θ1+|θ2|=90° is satisfied.
Claims16
A motor comprising:
- a two-layer rotor including an A-phase rotor and a B-phase rotor that are stacked together, wherein
- the A-phase rotor includes two A-phase rotor core bases and a field magnet arranged between the A-phase rotor core bases, and each of the A-phase rotor core bases includes claw poles arranged at equal intervals in a circumferential direction, and
- the B-phase rotor includes two B-phase rotor core bases and a field magnet arranged between the B-phase rotor core bases, and each of the B-phase rotor core bases includes claw poles arranged at equal intervals in a circumferential direction;
- and
- a two-layer stator including an A-phase stator and a B-phase stator that are stacked together, wherein
- the A-phase stator includes two A-phase stator core bases and an A-phase winding arranged between the A-phase stator core bases, and each of the A-phase stator core bases includes claw poles arranged at equal intervals in a circumferential direction, and
- the B-phase stator includes two B-phase stator core bases and a B-phase winding arranged between the B-phase stator core bases, and each of the B-phase stator core bases includes claw poles arranged at equal intervals in a circumferential direction;
- wherein θ1+|θ2|=90° is satisfied, where θ1 represents, in electric angle, an angle of the B-phase stator relative to the A-phase stator in a clockwise circumferential direction, and θ2 represents, in electric angle, an angle of the B-phase rotor relative to the A-phase rotor in a counterclockwise circumferential direction.
5 more elements
A method for driving a motor, wherein the motor includes:
- a two-layer rotor including an A-phase rotor and a B-phase rotor that are stacked together, wherein
- the A-phase rotor includes two A-phase rotor core bases and a field magnet arranged between the A-phase rotor core bases, and each of the A-phase rotor core bases includes claw poles arranged at equal intervals in a circumferential direction, and
- the B-phase rotor includes two B-phase rotor core bases and a field magnet arranged between the B-phase rotor core bases, and each of the B-phase rotor core bases includes claw poles arranged at equal intervals in a circumferential direction;
- and
- a two-layer stator including an A-phase stator and a B-phase stator that are stacked together, wherein
- the A-phase stator includes two A-phase stator core bases and an A-phase winding arranged between the A-phase stator core bases, and each of the A-phase stator core bases includes claw poles arranged at equal intervals in a circumferential direction, and
- the B-phase stator includes two B-phase stator core bases and a B-phase winding arranged between the B-phase stator core bases, and each of the B-phase stator core bases includes claw poles arranged at equal intervals in a circumferential direction;
- the method comprising applying power to the A-phase winding and the B-phase winding in different phases.
5 more elements
A method for driving a motor, wherein the motor includes:
- a two-layer rotor including an A-phase rotor and a B-phase rotor that are stacked together, wherein
- the A-phase rotor includes two A-phase rotor core bases and a field magnet arranged between the A-phase rotor core bases, and each of the A-phase rotor core bases includes claw poles arranged at equal intervals in a circumferential direction, and
- the B-phase rotor includes two B-phase rotor core bases and a field magnet arranged between the B-phase rotor core bases, and each of the B-phase rotor core bases includes claw poles arranged at equal intervals in a circumferential direction;
- and
- a two-layer stator including an A-phase stator and a B-phase stator that are stacked together, wherein
- the A-phase stator includes two A-phase stator core bases and an A-phase winding arranged between the A-phase stator core bases, and each of the A-phase stator core bases includes claw poles arranged at equal intervals in a circumferential direction, and
- the B-phase stator includes two B-phase stator core bases and a B-phase winding arranged between the B-phase stator core bases, and each of the B-phase stator core bases includes claw poles arranged at equal intervals in a circumferential direction;
- wherein
- the A-phase winding is wound around the A-phase stator,
- the A-phase winding includes a first system annular winding and a second system annular winding,
- the B-phase winding is wound around the B-phase stator, and
- the B-phase winding includes a first system annular winding and a second system annular winding;
- the method comprising:
- applying power to the two first system annular windings and the two second system annular windings in different phases.
11 more elements
Dependencies are inferred from the claim text.