Brushless motor and electric device mounted with same
US9214838B2 · kind B2 · utility
4Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2012 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Oct 7, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brushless motor capable of high speed rotation by field weakening operation is designed to reduce torque ripple at a maximum load point with current phase advance so that the torque ripple at the maximum load point is 1 to 1.5 times the torque ripple at a low speed load point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.