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Patent Searching and Data


Title:
ROTATOR CONTROL DEVICE, REFRIGERANT COMPRESSING DEVICE, REFRIGERANT CYCLE DEVICE, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2021/014650
Kind Code:
A1
Abstract:
This rotator control device (100) is characterized by comprising: a voltage applying unit (3) for applying a voltage to a three-phase rotator (1); a current detecting unit (4) for outputting current information which indicates information on the current flowing through the rotator (1) due to the voltage being applied; a control unit (5) for outputting a voltage command for the voltage to be applied among the phases of the rotator (1); and an absent phase determining unit (6) that observes the voltage command and the current information, thereby detecting the current value flowing between the phases, and performs absent phase determination that involves comparing the total value of the current values flowing between the phases with a predetermined reference value, thereby determining the presence or absence of an absent phase of the rotator (1).

Inventors:
HONGYO AKANE (JP)
SATAKE AKIRA (JP)
Application Number:
PCT/JP2019/029255
Publication Date:
January 28, 2021
Filing Date:
July 25, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P25/18; H02P27/06
Foreign References:
JPH0654550A1994-02-25
JP2015142462A2015-08-03
JPH04355697A1992-12-09
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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