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Sensorless Field Oriented Induction Motor Control Using Test Signals
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| Author(s) |
C. Rudolph; U. Schümann; B. Orlik |
| Abstract |
The sensorless field oriented control of induction motor drives requires the calculation of the
flux angle and the speed by a model from stator voltages and currents. A new method is
described to identify the flux angle even down to zero Hertz stator frequency, thus stable
operation of the sensorless controlled drive is ensured in the entire torque-speed plane. If model
parameters deviate from machine parameters the quality of the control deteriorates. Therefore
the machine parameters have to be identified accurately before starting the control. During
operation the sensorless control can be improved by an online adaptation of the stator and the
rotor resistance using a thermal observer. |
| Download |
| Filename: | EPE2001 - PP00046 - Rudolph.pdf |
| Filesize: | 727.1 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-11 by System |
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