Methods and systems for detecting a winding resistance and winding temperature of an alternating current electrical machine
US11817803B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2022 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | May 7, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method includes determining a vector state of an alternating current (AC) electrical machine. The method includes, when the vector state is a zero-vector state, obtaining a plurality of phase current samples of the AC electrical machine, determining a decay time constant based on the plurality of phase current samples, and determining a resistance of a winding of the AC electrical machine based on the decay time constant. The method further includes selectively activating a plurality of switches of an inverter configured to provide power to the AC electrical machine based at least on the resistance of the winding of the AC electrical machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.