ROTATING ELECTRICAL MACHINE ROTOR - MITSUBISHI ELECTRIC CORP

Title:

ROTATING ELECTRICAL MACHINE ROTOR

Document Type and Number:

WIPO Patent Application WO/2011/155042

Kind Code:

A1

Abstract:

A rotating electrical machine rotor comprises a rotor iron core disposed on the outer circumferential side of the rotor shaft and a plurality of magnetic poles secured to the rotor iron core and arranged in the circumferential direction of the rotor iron core. The rotating electrical machine rotor further comprises a nonmagnetic ring attached by insertion to the outer circumferences of the magnetic poles and having a substantially polygonal outer circumferential shape. The nonmagnetic ring has an inner circumferential length (L) before assembly that satisfies a relationship of L ≤ L0, where L0 is the length of an envelope curve consisting of tangent lines of a magnetic-pole outer circumferential surface and an adjacent magnetic-pole outer circumferential surface. The rotating electrical machine rotor can be reduced in size and cost.

Inventors:

YAMAMURA AKIHIRO (JP)
TAKASHIMA KAZUHISA (JP)
FUJII HIDECHIKA (JP)
MIYAOKA MASAYUKI (JP)
AKUTSU SATORU (JP)

Application Number:

PCT/JP2010/059844

Publication Date:

December 15, 2011

Filing Date:

June 10, 2010

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
YAMAMURA AKIHIRO (JP)
TAKASHIMA KAZUHISA (JP)
FUJII HIDECHIKA (JP)
MIYAOKA MASAYUKI (JP)
AKUTSU SATORU (JP)

International Classes:

H02K1/27

Domestic Patent References:

WO2006051934A1

2006-05-18

Foreign References:

JP2009106065A	2009-05-14
JP2001025193A	2001-01-26
JP2001025193A	2001-01-26
JPS55120285A	1980-09-16

Other References: