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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 (Umeda Center Building, 4-12, Nakazaki-nishi 2-chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
SAKAWAKI Atsushi (Umeda Center Building, 4-12, Nakazaki-nishi 2-chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
Application Number:
JP2018/017198
Publication Date:
November 15, 2018
Filing Date:
April 27, 2018
Export Citation:
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Assignee:
DAIKIN INDUSTRIES, LTD. (Umeda Center Building, 4-12 Nakazaki-nishi 2-chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, 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
Attorney, Agent or Firm:
MAEDA & PARTNERS (Shin-Daibiru Bldg. 23F, 2-1 Dojimahama 1-chome, Kita-ku, Osaka-sh, Osaka 04, 〒5300004, JP)
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