Method and device for asynchronous electric motor control by magnetic flux regulation
US5172041A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Aug 1, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for asynchronous motor control by closed-loop variation of magnetic induction flux as a function of a desired value in which the closed-loop variation includes flux measurement on the basis of measurement of motor voltage and current and determination of a measured flux value obtained using said measurements and characteristic parameters of said motor in accordance with the motor operating equations, the method including the steps of obtaining the measured flux for an arbitrarily fixed value of at least one of said parameters wich may significantly differ from the actual value thereof and of then correcting the desired value in order to compensate for this possible difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.