Title:
ELECTRIC MOTOR DRIVE DEVICE, ELECTRIC MOTOR SYSTEM, AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/070005
Kind Code:
A1
Abstract:
This electric motor drive device (100) drives an electric motor (10) that has a winding structure in which a first multi-phase winding and a second multi-phase winding are wound. The electric motor drive device (100) comprises: a first direct-current/alternating-current converter (71) that is connected to the first multi-phase winding and applies multi-phase alternating-current voltage to the electric motor (10); a second direct-current/alternating-current converter (72) that is connected to the second multi-phase winding and applies multi-phase alternating-current voltage to the electric motor (10); a first three-phase switch (61) that connects and disconnects the phases of the first multi-phase winding; a second three-phase switch (62) that connects and disconnects the phases of the second multi-phase winding; and a winding switch (50) that connects and disconnects the first multi-phase winding and the second multi-phase winding.
Inventors:
ARISAWA KOICHI (JP)
TOYODOME SHINYA (JP)
UMEHARA SHIGEO (JP)
TOYODOME SHINYA (JP)
UMEHARA SHIGEO (JP)
Application Number:
PCT/JP2016/080305
Publication Date:
April 19, 2018
Filing Date:
October 13, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P25/18; H02P25/22
Foreign References:
| JP2014204574A | 2014-10-27 | |||
| JP2010233392A | 2010-10-14 | |||
| JP2007104789A | 2007-04-19 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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