Control of a brushless motor
US9065367B2 · kind B2 · utility
13Cited by
90References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 15, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Feb 16, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2209/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of controlling a brushless motor that includes exciting a winding of the motor until current in the winding exceeds a threshold, and then continuing to excite the winding for an overrun period. The length of the overrun period is adjusted in response to a change in one of time, motor speed and excitation voltage. Additionally, a control system that implements the method, and a motor system that incorporates the control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.