Login| Sign Up| Help| Contact|

Patent Searching and Data


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:
WO2013098912A12013-07-04
Foreign References:
JPH11113198A1999-04-23
JPH1127883A1999-01-29
JP2011036071A2011-02-17
US20180054101A12018-02-22
US20190199150A12019-06-27
JP2004328963A2004-11-18
JP2003134707A2003-05-09
JPH08336269A1996-12-17
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Download PDF: