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ON LINE TUNING OF ROTOR FLUX OBSERVERS FOR FIELD ORIENTED DRIVES USING IMPROVED STATOR BASED FLUX ESTIMATOR FOR LOW SPEEDS
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| Author(s) |
E.K.K. Sng; A.C. Liew |
| Abstract |
The paper describes a model-reference adaptive system (MRAS) used for tuning the rotor time constant or motor speed of an induction motor at low speeds. Tuning of stator parameters using high frequency signals also take place simultaneously to enable the state used by the MRAS to be accurate even at low speeds. Stability and dynamics ofMRAS are presented and verified experimentally on an induction motor at zero speed. Observer of rotor flux based on tUned rotor speed is shown to preserve field orientation at low speeds. |
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| Filename: | Unnamed file |
| Filesize: | 404.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2018-05-16 by System |
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