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Title:
PERMANENT MAGNET MOTOR AND ELECTRIC POWER STEERING APPARATUS USING THE SAME
Document Type and Number:
Japanese Patent JP2007151232
Kind Code:
A
Abstract:

To prevent a stator winding from protruding toward the inside of a stator iron core in a permanent magnet motor, and to realize reduction in torque pulsations during rotation, and in noise and vibration.

In the permanent magnet motor comprises a rotor attached to a magnetic field permanent magnet, and the stator having the stator iron core provided with a plurality of magnetic pole teeth and slots for the stator winding, one stator iron core piece has a closed slot, where the tip of the magnetic pole tooth is coupled to the tip of the adjacent magnetic pole tooth; and the other stator iron core piece has an opened slot, where the tip of the magnetic pole tooth is not coupled to the tip of the adjacent magnetic pole tooth but the stator iron core is constituted by mixing and stacking these stator iron core pieces.


Inventors:
YOKOYAMA MITSUYUKI
ENDO SHIGERU
Application Number:
JP2005338785A
Publication Date:
June 14, 2007
Filing Date:
November 24, 2005
Export Citation:
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Assignee:
TOSHIBA CORP
NSK LTD
International Classes:
H02K1/16; B62D5/04; H02K1/18; H02K1/27; H02K21/16
Domestic Patent References:
JPH0919089A1997-01-17
JPS63140645A1988-06-13
JP2005080365A2005-03-24
JP2003204640A2003-07-18
JPS6141343A1986-02-27
Attorney, Agent or Firm:
Tsuyoshi Sato
Kiyoshi Ogawa