Title:
MOTOR DRIVE CONTROL DEVICE AND OUTDOOR UNIT OF AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/188764
Kind Code:
A1
Abstract:
This motor drive control device (20) comprises: an inverter circuit (7) that has a first switching element unit and a second switching element unit each comprising one or more switching element, and that converts DC voltage to AC voltage and applies the converted voltage to a motor (6); a control unit (9) that controls the inverter circuit (7) by outputting a drive signal to the inverter circuit (7); a relay (11) that is provided between the first switching element unit and the control unit (9), that closes when power is supplied, that connects the control unit (9) and the first switching element unit by closing, that opens when the supply of power is cut, that cuts the connection between the control unit and the first switching unit by opening, and that cuts the drive signal by cutting the connection; and a thermal relay (10) that opens and closes according to the temperature of the motor, that supplies power to the relay (11) by closing, and that cuts the supply of power of the relay (11) by opening when the temperature of the motor exceeds a predetermined value.
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Inventors:
SAKURAI KENTA (JP)
YAMAMOTO KEISHI (JP)
YAMAMOTO KEISHI (JP)
Application Number:
PCT/JP2019/011535
Publication Date:
September 24, 2020
Filing Date:
March 19, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P29/032
Domestic Patent References:
| WO2016167111A1 | 2016-10-20 |
Foreign References:
| JPH05316638A | 1993-11-26 | |||
| JP2000002188A | 2000-01-07 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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