Title:
INVERTER DEVICE, FAILURE DETECTION METHOD, AND FAILURE DETECTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2018/029830
Kind Code:
A1
Abstract:
This inverter device is provided with: a converter unit (11) which converts alternating current from an AC power supply (20) into direct current; an inverter unit (12) which converts the direct current from the converter (11) into alternating current and outputs the alternating current to a motor (30); an inverter control unit (13) which controls the on-off positions of the switching element of the inverter unit (12); and a failure detection unit (14) which detects a failure in a roll-to-roll device (50) and outputs a failure signal. The failure detection unit (14) is provided with a torque-winding diameter estimation unit (143) that estimates the torque-winding diameter ratio, which is the ratio of motor torque (T) to winding diameter (r), and a comparison unit (145) that compares the estimated torque-winding diameter ratio with a torque-winding diameter ratio reference value measured in advance.
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Inventors:
OKUMURA IKUYA (JP)
Application Number:
PCT/JP2016/073650
Publication Date:
February 15, 2018
Filing Date:
August 10, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B65H7/06; B65H16/10; B65H18/10; B65H26/04
Foreign References:
| JP2003285972A | 2003-10-07 | |||
| JPS61295975A | 1986-12-26 | |||
| JPH10182001A | 1998-07-07 | |||
| JPH03264358A | 1991-11-25 | |||
| JPH1111758A | 1999-01-19 | |||
| JPH06115760A | 1994-04-26 | |||
| JPH061509A | 1994-01-11 | |||
| JPH1035973A | 1998-02-10 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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