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Patent Searching and Data


Title:
ELECTRIC MOTOR SYSTEM, AND TURBO COMPRESSOR PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2019/216080
Kind Code:
A1
Abstract:
An electric motor system (30) is provided with: bearingless motors (40, 50); power supply units (61, 62) for applying a voltage to armature windings (46a-46c, 56a-56c) and support windings (47a-47c, 57a-57c) provided to stators (44, 54) of the bearingless motors (40, 50); and a control unit for controlling the power supply units (61, 62) so that one of an armature voltage VA, which is the voltage applied to the armature windings (46a-46c, 56a-56c), and a support current IS, which is the current flowing to the support windings (47a-47c, 57a-57c), is increased and the other is reduced. As a result, it is possible to operate the bearingless motors in conformance with a prescribed power supply capacity.

Inventors:
ONO Takaaki (Umeda Center Building, 4-12, Nakazaki-nishi 2-chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
IRINO Yusuke (Umeda Center Building, 4-12, Nakazaki-nishi 2-chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
NAKAZAWA Yuji (Umeda Center Building, 4-12, Nakazaki-nishi 2-chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
Application Number:
JP2019/015161
Publication Date:
November 14, 2019
Filing Date:
April 05, 2019
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:
H02P25/02; H02K7/09; H02K7/14; H02K21/14
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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