Failure determination method for motor system
US9372236B2 · kind B2 · utility
4Cited by
16References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2014 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | Jan 3, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/343
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A failure determination method for a motor system includes setting a current value required to initially drive a motor to a first current command value, increasing a rotational speed of a rotating magnetic field of the motor up to a preset reference speed, comparing an intensity of a back electromotive force, generated when a rotor of the motor is rotated at the preset reference speed, to a magnitude of a voltage applied to apply current in accordance with the set first current command value, and determining a cause of a failure of the motor based on the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.