PERMANENT MAGNET-EMBEDDED ELECTRIC MOTOR

WIPO Patent Application WO/2015/186280

A1

This permanent magnet-embedded electric motor is equipped with: a stator having windings that are wound around a stator core; and a rotor that is rotatably disposed with a gap from the inner circumferential surface of the stator. The rotor has a rotor core that has first magnet-embedding holes disposed on a q-axis and second magnet-embedding holes disposed on a d-axis, first permanent magnets that are inserted in the first magnet-embedding holes, and second permanent magnets that are inserted in the second magnet-embedding holes. The rotor core is constructed by stacking multiple thin iron plates, wherein the plate thickness of an inner diameter bridge section of a thin iron plate is smaller than the plate thickness of the thin iron plate, said inner diameter bridge section being an area surrounded by the short side of the first magnet-embedding hole on the inner circumferential side and short sides of two second magnet-embedding holes facing the aforementioned short side.

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KAWAMURA KIYOMI

PCT/JP2015/001179

December 10, 2015

March 05, 2015

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PANASONIC IP MAN CO LTD (JP)

H02K1/22; H02K1/27; H02K21/14

WO2013179375A1	2013-12-05
WO2008117497A1	2008-10-02
WO2014047748A1	2014-04-03

JP2001333553A	2001-11-30
JPH09289745A	1997-11-04
JP2012105410A	2012-05-31
JP2013094041A	2013-05-16
JP2005130604A	2005-05-19
JP2005160133A	2005-06-16

FUJII, Kentaro et al. (JP)
Fujii Kentaro (JP)

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