THREE-PHASE SYNCHRONOUS RELUCTANCE MOTOR

Title:

THREE-PHASE SYNCHRONOUS RELUCTANCE MOTOR

Document Type and Number:

WIPO Patent Application WO/2004/114501

Kind Code:

A1

Abstract:

A three-phase synchronous reluctance motor adapted to prevent the magnetic resistance in the magnetic path of the back yoke of the stator from becoming excessively high while locally narrowing the back yoke and reducing the size of the stator. A three-phase synchronous reluctance motor includes a stator (100) having a rotor (200) and a plurality of teeth (103) opposed to the rotor (200) and disposed along the direction of the periphery of the inner surface, the rotor having a plurality of magnetic poles, every one of the rotor magnetic poles being associated with six teeth, and a stator winding which is wound with a coil pitch defined by five of the six teeth, wherein the motor includes at least one width narrowing section (101) which makes narrower the width of the magnetic path in the back yoke (104) of the stator corresponding to adjacent teeth (103) adjacent the teeth in question, than the width of the magnetic path in the back yoke of the stator corresponding to the other teeth, with respect to the teeth between two adjacent stator windings which, during three-phase driving, form magnetic poles in phase with each other and dissimilar in polarity.

Inventors:

SAKUMA MASAFUMI (JP)
FUKUSHIMA TOMOHIRO (JP)

Application Number:

PCT/JP2004/008629

Publication Date:

December 29, 2004

Filing Date:

June 18, 2004

Export Citation:

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Assignee:

AISIN SEIKI (JP)
SAKUMA MASAFUMI (JP)
FUKUSHIMA TOMOHIRO (JP)

International Classes:

H02K1/12; H02K1/16; H02K1/27; H02K19/10; H02K21/14; (IPC1-7): H02K1/12; H02K1/27

Foreign References:

JPH1080077A	1998-03-24
JPS56159949A	1981-12-09
JP2001309587A	2001-11-02
JP2000350390A	2000-12-15
JP2001069711A	2001-03-16
JPH11225452A	1999-08-17
EP0860929A2	1998-08-26

Other References: