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US 2015/0084342 A1Published application
Permanent magnet rotary electrical machine and wind-power generation system
AssigneeKabushiki Kaisha Toshiba
InventorsMasanori ARATA, Takashi UEDA, Takaaki HIROSE
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Abstract
The permanent magnet rotary electrical machine according to an embodiment includes a rotor core and a stator core. The rotor core is attached to a rotation shaft, and has permanent magnets. The stator core is disposed to face the rotor core in a radial direction of the rotation shaft, and has slots and coils. The slots are provided with coils. Here, the coils are wound in a concentrated winding. Besides, the number of slots per pole and phase q is a fraction satisfying the following relational expression (A). ¼<q<½ (A)
Claims6
A permanent magnet rotary electrical machine, comprising:
- a rotor core attached to a rotation shaft and having permanent magnets;
- and
- a stator core disposed to face the rotor core in a radial direction of the rotation shaft, the stator core having slots and coils, the slots being provided with coils,
- wherein the coils are wound in a concentrated winding, and wherein the number of slots per pole and phase q is a fraction satisfying the following relational expression (A)
- ¼<q<½ (A).
2 more elements
Dependencies are inferred from the claim text.