Title:
ROTARY ELECTRIC MACHINE, ROTARY ELECTRIC MACHINE DRIVE SYSTEM HAVING THE SAME AND RAILWAY VEHICLE
Document Type and Number:
Japanese Patent JP2019075922
Kind Code:
A
Abstract:
To provide a rotary electric machine capable of suppressing wear of a bearing while reducing noises of a cooling fan due to magnetic force imbalance.SOLUTION: The rotary electric machine including a stationary part 101, a rotator 102 and a shaft 103 fixed to the rotator 102, comprises: multiple bearings 210a and 210b mounted on the shaft 103; a cooling fan 200 rotatably supported by the multiple bearings 210a and 210b; and a magnetic force generation unit 220 for rotating the shaft 103 and the cooling fan 200 in a synchronous/asynchronous manner. The magnetic force generation unit 220 is disposed between the multiple bearings 210a and 210b.SELECTED DRAWING: Figure 1
Inventors:
ITO MAKOTO
TAKAHASHI AKIFUMI
SUGIMOTO SHINJI
TAMURA TATSUHIRO
SHIBA YUKI
TAKAHASHI AKIFUMI
SUGIMOTO SHINJI
TAMURA TATSUHIRO
SHIBA YUKI
Application Number:
JP2017201633A
Publication Date:
May 16, 2019
Filing Date:
October 18, 2017
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02K9/26; H02K5/10; H02K5/173; H02K5/20; H02K5/24; H02K9/06
Domestic Patent References:
| JP4731792B2 | 2011-07-27 | |||
| JP2013211949A | 2013-10-10 | |||
| JP2004135398A | 2004-04-30 | |||
| JP2008306922A | 2008-12-18 | |||
| JP2016201902A | 2016-12-01 |
Foreign References:
| EP1109297A2 | 2001-06-20 | |||
| DE1138460B | 1962-10-25 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation