Rotor position estimator for an electrical machine
US8159168B2 · kind B2 · utility
6Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2009 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Oct 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for estimating a rotor position in an electrical machine is provided. The method is applicable to electrical machines that have magnetic saliency. The method includes extracting the rotor position from a demodulated output signal generated in response to an injected high frequency carrier signal and determining a position error compensation based upon a demodulation delay and a velocity or rotational frequency of the electrical machine. The method also includes estimating the rotor position by applying the position error compensation to the extracted rotor position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.