Controller for electrical machines
US6628100B1 · kind B1 · utility
3Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2002 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Jul 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/089
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for a reluctance machine having two mutually movable parts and at least one inductive phase winding adapted for a certain maximum drive current value. The method includes detecting when a phase winding is in a non-drive mode; causing a test current, having a second maximum value lower than said certain maximum value, to flow through the phase winding and through a current sensor when the winding is in the non-drive mode; and establishing a mutual position in dependence of the output of said current sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.