Temperature compensation of insulation monitoring for rotating machines
US9772364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2013 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Dec 14, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system includes a monitoring and/or protection system that includes an insulation derivation circuit. The insulation derivation circuit is configured to derive a first temperature compensation curve based on a first temperature and a first current, and the monitoring and/or protection system is configured to communicatively couple to a first current sensor configured to sense the first current traversing a first phase of a stator winding of a motor, a generator, or a combination thereof. The insulation derivation circuit is also configured to communicatively couple to a first temperature sensor configured to sense the first temperature of the stator when the stator is energized, and the temperature compensation curve is configured to map a temperature to a leakage dissipation factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.