Title:
TEMPERATURE ESTIMATION METHOD FOR ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2021/172507
Kind Code:
A1
Abstract:
A temperature estimation method for an electric motor according to an embodiment of the present invention includes a power conversion device for converting power from an overhead line, an electric motor driven by power supplied from the power conversion device, a current sensor for detecting electric motor current flowing through the electric motor, a rotational speed sensor for detecting the rotational speed of the electric motor, and an outside air temperature sensor for detecting the outside air temperature. The temperature of the electric motor is calculated on the basis of the electric motor current detected by the current sensor, the rotational speed detected by the rotational speed sensor, and the outside air temperature detected by the outside air temperature sensor.
Inventors:
MISUMI MASAYA (JP)
MAKINO TOMOYUKI (JP)
MAKINO TOMOYUKI (JP)
Application Number:
PCT/JP2021/007306
Publication Date:
September 02, 2021
Filing Date:
February 26, 2021
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP (JP)
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
B60L15/20; B60L3/00; H02P29/62
Foreign References:
| JP2005124366A | 2005-05-12 | |||
| JP2018007545A | 2018-01-11 | |||
| JP2002034281A | 2002-01-31 | |||
| JP2015100207A | 2015-05-28 |
Attorney, Agent or Firm:
KURATA, Masatoshi et al. (JP)
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