Title:
ELECTRIC MOTOR CONTROL DEVICE AND ELECTRIC MOTOR CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2021/059389
Kind Code:
A1
Abstract:
An electric motor control device (100) drives a motor (3) circulating a refrigerant, and comprises: a refrigerant temperature detection unit (7) that detects a temperature indicating the state of the refrigerant; a pre-drive determination unit (8) that determines whether the refrigerant is in a clathrate state using the temperature and a predetermined threshold value; a current control unit (12) that if the refrigerant is in the clathrate state, applies a current of a first current value for undoing the clathrate state of the refrigerant to the motor (3); and a drive signal generation unit (13) that generates a drive signal for driving the motor (3) after the clathrate state is undone.
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Inventors:
SUZUKI YUTA (JP)
TANIKAWA MAKOTO (JP)
TANIKAWA MAKOTO (JP)
Application Number:
PCT/JP2019/037553
Publication Date:
April 01, 2021
Filing Date:
September 25, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Foreign References:
| JPH09113039A | 1997-05-02 | |||
| JPH10253201A | 1998-09-25 | |||
| JP2007259610A | 2007-10-04 | |||
| JP2011038689A | 2011-02-24 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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