Control of an electrical machine
US8841876B2 · kind B2 · utility
14Cited by
80References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2011 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Jun 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of controlling an electrical machine that includes exciting a phase winding with a supply voltage, and freewheeling the phase winding when current in the phase winding exceeds a threshold. The threshold is then adjusted in response to changes in the supply voltage and/or the speed of the electrical machine. Additionally, a control system that implements the method and an electrical machine comprising the control system are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.