Method and apparatus for movable element position detection in an electrically commutated machine
US7429841B2 · kind B2 · utility
2Cited by
10References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2004 |
| Grant date | Sep 30, 2008 |
| Priority date | — |
| Expiry date | Dec 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2203/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and circuit for detecting the position of the movable element of an electrically commutated machine. The method and apparatus allow detection of the back electromagnetic force (BEMF) waveform with all legs of the machine energized by mathematically removing the applied voltage from the measured voltage across the phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.