State advance controller commutation loop for brushless D.C. motors
US6239564A · kind A · utility
24Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1999 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Oct 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and system for advancing the state of commutation of an electronically commutated brushless D.C. motor. Impending motor stall is detected by measuring current flow through the motor windings to ascertain magnetic saturation. Upon such detection, a time sequence is started and if a change of state has not occurred within the time sequence, the state is advanced to the next succeeding state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.