ROTOR AND MOTOR - DAIKIN IND LTD

Title:

ROTOR AND MOTOR

Document Type and Number:

WIPO Patent Application WO/2021/065687

Kind Code:

A1

Abstract:

The present invention provides a technique for reducing a d-axis inductance in a rotor. A rotor 20 according to one embodiment of the present disclosure is provided with: permanent magnets 22, 23 housed in different magnet slots formed each other in a rotor core 21 and disposed magnetically in series; and a flux barrier (hollow portion 24) provided for each of the permanent magnets 22, 23 disposed magnetically in series, in the vicinity of an end portion in a direction orthogonal to the direction of a main magnetic flux. The hollow portion 24 is then provided in such a form that the flux barriers corresponding to the respective permanent magnets 22, 23 disposed magnetically in series are in communication with each other. A motor 1 according to another embodiment of the present disclosure is provided with the above rotor 20.

Inventors:

OKUYAMA YOSHITAKA (JP)
HIRANO MASAKI (JP)
NAKA SHOUJIROU (JP)
SHIMIZU SHUNSUKE (JP)
YASUDA YOSHIKI (JP)
YAMAGIWA AKIO (JP)

Application Number:

PCT/JP2020/036117

Publication Date:

April 08, 2021

Filing Date:

September 24, 2020

Export Citation:

Click for automatic bibliography generation Help

Assignee:

DAIKIN IND LTD (JP)

International Classes:

H02K21/14; H02K1/22; H02K1/27

Domestic Patent References:

WO2013098912A1

2013-07-04

Foreign References:

JPH11113198A	1999-04-23
JPH1127883A	1999-01-29
JP2011036071A	2011-02-17
US20180054101A1	2018-02-22
US20190199150A1	2019-06-27
JP2004328963A	2004-11-18
JP2003134707A	2003-05-09
JPH08336269A	1996-12-17
JP2012244738A	2012-12-10
JP2019181001A	2019-10-24

Other References: