Brushless motor with a rotor pole position detector associated with each armature winding and electrically connected to another armature winding
US4723100A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1985 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Jun 13, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S250/909
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brushless motor includes a plurality of stator armature windings having winding frames with spaces defined therein, respectively, a rotor mounted on a rotatable shaft and having field poles rotatable with respect to the armature windings, and a plurality of rotor position detectors such as Hall-effect devices disposed in the spaces, respectively, and having output terminals connected respectively to the input terminals of other armature windings, for continuously varying the currents flowing through the other armature windings dependent on signals indicative of the magnetic fluxes from the field poles as detected by the rotor position detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.