Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ELECTRIC MOTOR SYSTEM AND TURBO COMPRESSOR PROVIDED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2018/207669
Kind Code:
A1
Abstract:
The radial load of a drive shaft (30) is supported only by a plurality of bearingless motors (60, 70). The maximum values of the radial load applied to the respective bearingless motors (60, 70) are nonuniform. In the bearingless motor (60) in which the maximum value of the radial load is the greatest, the maximum value of a supporting magnetic flux produced for generating an electromagnetic force supporting the radial load is greater than that of the bearingless motor (70) in which the maximum value of the radial load is the smallest. As a result, it is possible to reduce the size of a rotary system, including the drive shaft and a load, in an electric motor system.

Inventors:
NAKAZAWA YUJI (JP)
SAKAWAKI ATSUSHI (JP)
Application Number:
PCT/JP2018/017198
Publication Date:
November 15, 2018
Filing Date:
April 27, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DAIKIN IND LTD (JP)
International Classes:
H02K16/00; F04D17/10; F04D29/00; F04D29/058; F16C32/04; H02K7/09; H02K7/14; H02K21/14
Domestic Patent References:
WO2013080998A12013-06-06
Foreign References:
JP2002253576A2002-09-10
JP2014005833A2014-01-16
JP2524492Y21997-01-29
JP2002364535A2002-12-18
JP2000076676A2000-03-14
JP2004120886A2004-04-15
JP2013505697A2013-02-14
JP2010180974A2010-08-19
JP2010252605A2010-11-04
JP2008125203A2008-05-29
JP2016171625A2016-09-23
JP2016114114A2016-06-23
JP2014241725A2014-12-25
Other References:
See also references of EP 3598616A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
Download PDF: