Motor with integral controller
US5159218A · kind A · utility
69Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Jul 9, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D7/0676
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid state controller is mounted directly to a permanent magnet, brushless DC motor. The controller operates the motor at constant torque and variable speed. Speed is determined in accordance with density of the through flow. The motor and controller can be employed to circulate fluid in a circulation loop having variable pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.