Title:
MALFUNCTION DIAGNOSIS METHOD, MOTOR CONTROL METHOD, POWER CONVERSION DEVICE, MOTOR MODULE, AND ELECTRIC POWER STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/058670
Kind Code:
A1
Abstract:
This malfunction diagnosis method involves diagnosing whether a switching element that is provided to an electrical apparatus and is repeatedly switched on and off is malfunctioning. The malfunction diagnosis method includes: a step for determining whether there is an abnormality in the current flowing in the switching element when the switching element has been controlled to be in an on state; a step for determining whether there is an abnormality in the voltage at the switching element when the switching element has been controlled to be in the on state; and a step for determining the switching element to be malfunctioning when it has been determined that there is an abnormality in the current and/or the voltage.
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Inventors:
GHADERI AHMAD (JP)
Application Number:
PCT/JP2018/023115
Publication Date:
March 28, 2019
Filing Date:
June 18, 2018
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02P29/024; B62D5/04; B62D6/00; H02M7/48
Domestic Patent References:
| WO2017150638A1 | 2017-09-08 | |||
| WO2017122309A1 | 2017-07-20 |
Foreign References:
| JP2015089292A | 2015-05-07 |
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