Title:
POWER CONVERSION DEVICE, CONVEYANCE SYSTEM, POWER CONVERSION METHOD, PROGRAM, AND DIAGNOSTIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/117459
Kind Code:
A1
Abstract:
A power conversion device 3 is provided with: a power conversion circuit 10 for converting primary-side power to secondary-side power to be supplied to a motor 6; and a control circuit 100 for causing a secondary-side electric quantity to follow a control command, by the power conversion circuit 10. The control circuit 100 calculates a fluctuation level indicating the fluctuation range of a driving force of the motor 6 in a predetermined length of sampling period, and detects abnormalities of a conveyance device 2 that includes the motor 6 and a conveyance unit 5 driven by the motor 6, on the basis of the fluctuation level.
More Like This:
| JP2006173717 | SEMICONDUCTOR SWITCH CIRCUIT |
| WO/2021/197755 | POWER CONVERTER |
Inventors:
TAKASHIMA YUTA (JP)
HASHIMOTO RYOHEI (JP)
FUJIKAWA MASATOSHI (JP)
HASHIMOTO RYOHEI (JP)
FUJIKAWA MASATOSHI (JP)
Application Number:
PCT/JP2020/043260
Publication Date:
June 17, 2021
Filing Date:
November 19, 2020
Export Citation:
Assignee:
YASKAWA ELECTRIC CORP (JP)
International Classes:
H02M1/00; H02M7/48
Foreign References:
| JP2002126910A | 2002-05-08 | |||
| JP2002034289A | 2002-01-31 | |||
| JP2004266994A | 2004-09-24 | |||
| JP2017192990A | 2017-10-26 | |||
| JP2006158031A | 2006-06-15 | |||
| JP2019071755A | 2019-05-09 | |||
| JP2007070066A | 2007-03-22 |
Other References:
See also references of EP 4075649A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Download PDF: