To provide a stator core that minimizes a cogging torque of an EPS motor.
The stator core includes a first division core module, having a first height, such that a section perpendicular to a center axis of the stator core is provided in a T shape, an inner peripheral surface and an outer peripheral surface of a first yoke form an arc around the center of the stator core, first teeth protrudes from the inner peripheral surface toward the center and wound with a coil, and a second division module, having a second height, such that a section interposed between division modules stacked along the center axis of the stator core and perpendicular to the center axis of the stator core is provided in a T shape, an inner peripheral surface and an outer peripheral surface of a second yoke form an arc around the center of the stator core, and second teeth project from the inner peripheral surface toward the center and wound with a coil. The first height is larger than the second height, a first interval is provided when a plurality of first division core modules are combined to form a cylindrical shape, and a second interval is provided when a plurality of second division core modules are combined to form a cylindrical shape.
| WO/2018/230258 | MULTI-PHASE CLAW POLE MOTOR |
| JP6009937 | Rotating machine |
| JP2010166810A | 2010-07-29 | |||
| JP2009005543A | 2009-01-08 | |||
| JP2007151232A | 2007-06-14 | |||
| JPH033622A | 1991-01-09 | |||
| JP2009005543A | 2009-01-08 | |||
| JP2010166810A | 2010-07-29 |
Jun Tsuruta
Tomohiro Minamiyama
Akira Kawai
Kenichi Nakamura