System for controlling motor speed by altering magnetic field of the motor
US7045983B2 · kind B2 · utility
0Cited by
28References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2004 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Feb 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K23/66
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a system for controlling the speed of a motor by altering the magnetic field of the motor. The system includes field modification module, and a motor having field windings and a rotor. The field windings are configured to receive a driving signal that generates a magnetic field causing a rotation of the rotor. The field modification module is proximate the motor and alters the magnetic field in response to an input signal thereby controlling the speed and torque of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.