Motor cooling system and motor cooling monitoring method
US12218571B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 24, 2022 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | Aug 24, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a motor cooling system 1, a determination unit 33 is configured to perform periodic sampling of a driving current Ip or a rotation speed Np of an oil pump 23, and detect a decrease in cooling oil of a motor 2 when it is determined that a standard deviation of the driving current Ip or the rotation speed Np with respect to a plurality of sampling points is larger than a preset threshold value. The threshold value is set on the bases of a measurement value of the driving current Ip or the rotation speed Np of the oil pump 23 which is obtained by an operation test of the motor 2 in a state in which the cooling oil has decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.