Method and apparatus for sensorless control of permanent-magnet synchronous motors
US5569994A · kind A · utility
55Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1994 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Oct 27, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2209/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of estimating and controlling rotor position and velocity for a multi-phase brushless permanent-magnet motor by measuring only the stator phase currents at a high sampling rate. Measurements of the stator phase currents are used to obtain estimates of rotor position and velocity. In turn, these estimates are used to determine an amount of voltage to apply to each stator phase so as to obtain a desired regulation of rotor position or velocity, or to command rotor position or velocity to follow a desired trajectory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.