Title:
ラインスタート型永久磁石同期モータ用のロータアセンブリ
Document Type and Number:
Japanese Patent JP4937274
Kind Code:
B2
Abstract:
A rotor assembly includes a rotor core which has a central portion and a circumferential portion, wherein a shaft hole is formed at the central portion, and a plurality of conductors are arranged along the circumferential portion; a multiplicity of permanent magnets provided at a portion of the rotor core around the shaft hole; and at least one first ripple-reduction conductor formed at a polar switchover region of the rotor core, the polar switchover region being positioned between two opposite poles of two adjacent permanent magnets, so that a polar switchover of an induction voltage induced in the rotor core is alleviated to reduce a torque ripple phenomenon.
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Inventors:
Shin, Namchul
Application Number:
JP2008547101A
Publication Date:
May 23, 2012
Filing Date:
December 19, 2006
Export Citation:
Assignee:
DONGSEO ELECTRONIC CO.,LTD.
International Classes:
H02K1/27; H02K1/02; H02K1/22; H02K21/14
Domestic Patent References:
| JP2005039909A | 2005-02-10 | |||
| JP2004056887A | 2004-02-19 | |||
| JP2002044888A | 2002-02-08 | |||
| JP2002171702A | 2002-06-14 | |||
| JPH08256440A | 1996-10-01 | |||
| JPS6320105B2 | 1988-04-26 | |||
| JPS549708A | 1979-01-24 | |||
| JP2003134773A | 2003-05-09 | |||
| JP2005160285A | 2005-06-16 |
Attorney, Agent or Firm:
Yoichi Oshima