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Extended EMF- and Parameter Observer for sensorless controlled PMSM-machines at low speed
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| Author(s) |
STAFFLER Wolfgang; SCHROEDL Manfred; HOFER Matthias |
| Abstract |
The paper describes an extended EMF- and parameter observer for sensorless controlled PMSM-machines. Therefore a combination of INFORM-method and EMF-model is used. At low speed, the reference position of the permanent magnet flux is calculated by INFORM-method and compared with the permanent magnet flux provided by EMF-model. By transformation of the voltage equation into a current-oriented reference frame, a 4th order state model is presented which provides the observed stator resistance and stator inductance of the PMSM. A stability analysis results in a stable operation. Measurement results of the extended EMF-and parameter observer at stationary operation point and in dynamical operation are given. |
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| Filename: | 0528-epe2007-full-09592929.pdf |
| Filesize: | 337 KB |
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| Type |
Members Only |
| Date |
Last modified 2008-01-11 by System |
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