Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/212585
Kind Code:
A1
Abstract:
A motor control device 100 is provided with the following: a rectifier circuit 2 that converts an alternating current voltage to a direct current voltage; and an inverter circuit 4 that converts the direct current voltage, which was outputted from the rectifier circuit 2, to an alternating current voltage and applies the alternating current voltage to a motor 6. The motor control device 100 is provided with the following: a plurality of series circuits that are connected to a direct current bus 20 of the rectifier circuit 2 and the inverter circuit 4, the series circuits each being constituted of a smoothing capacitor 3 and a switch 7; and a control circuit 8 that controls the switches 7. The motor control device is characterized in that the control circuit 8 has a current passage accumulated time, which is the time during which current has passed through the rectifier circuit 2 or the inverter circuit 4, of a certain amount of time or greater, and if a temperature accumulated time, which is the time accumulated during which a temperature of greater than or equal to a certain value is detected inside the motor control device, is greater than or equal to a certain amount of time, the switch 7 is switched between on and off states.
Inventors:
TADA KIYOKAZU (JP)
MITSUMATSU HIROAKI (JP)
MITSUMATSU HIROAKI (JP)
Application Number:
PCT/JP2016/067103
Publication Date:
December 14, 2017
Filing Date:
June 08, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P29/68; H02P27/06
Foreign References:
| JP2007049837A | 2007-02-22 | |||
| JPS63100997U | 1988-06-30 | |||
| JP2014107897A | 2014-06-09 | |||
| US20140002104A1 | 2014-01-02 | |||
| US20130057297A1 | 2013-03-07 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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