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US 12,651,938 B2Granted
Synchronous reluctance motor
AssigneeMitsubishi Electric Corporation
InventorsYu Hamada, Moriyuki Hazeyama, Hiroshi Mitsuda
Life of this patent
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Abstract
A synchronous reluctance motor includes a shaft, a rotor, a stator, and multiple magnetic wedges. The stator radially opposes the rotor with a space therebetween. The stator includes a stator core having multiple slots arranged in the circumferential direction and open toward the rotor, and multiple stator coils disposed in the multiple slots. Multiple magnetic wedges close at least some of the multiple slots with the multiple stator coils disposed therein.
Claims9
A synchronous reluctance motor comprising:
- a shaft supported rotatably around a rotation axis;
- a rotor located radially outward from the shaft and rotatable integrally with the shaft, the rotor including a plurality of salient poles;
- a stator including
- a stator core radially opposing the rotor with a space therebetween, the stator core including a plurality of slots arranged in a circumferential direction around the rotation axis, the plurality of slots being open toward the rotor, and
- a plurality of stator coils disposed in the plurality of slots;
- and
- a plurality of magnetic wedges to close at least some of the plurality of slots with the plurality of stator coils disposed therein, wherein
- a number of the plurality of magnetic wedges is equal to a multiple of a product of a number of poles of the rotor and a number of phases of the stator, and is smaller than a number of the plurality of slots,
- a radial thickness of the plurality of magnetic wedges is larger than a radial length of the space between the stator and the rotor, and
- the plurality of magnetic wedges are disposed at regular intervals in the circumferential direction.
7 more elements
Dependencies are inferred from the claim text.