Monitoring device for an electric machine, control device and method
US9774280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2015 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Sep 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a monitoring device for an electric machine, comprising a first detection apparatus which is configured to detect electrical power supplied to the electric machine, comprising a second detection apparatus which is configured to detect theoretical mechanical power output by the electric machine on the basis of a commutation of the electric machine, and comprising a calculation apparatus which, on the basis of the detected electrical power and of the detected theoretical mechanical power, is configured to calculate an efficiency of the electric machine and to emit an error signal if the calculated efficiency is greater than 1. The present invention further discloses a control device for an electric machine and a method for monitoring an electric machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.