Method and system for determining electronic commutation in brushless DC machines irrespective of the placement of rotor position sensors
US6850022B2 · kind B2 · utility
12Cited by
36References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2003 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | May 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and system for determining the commutation position in a DC machine using a single-bit rotor sensor and the back EMF signal from a stator winding by calculating a delay value, which is equal to the time elapsed between detection of the position signal and the back EMF signal, and establishing commutation after a period of time equal to the delay value has elapsed from when the position signal is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.