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A SPEED SENSORLESS DIGITALLY CONTROLLED INDUCTION MOTOR DRIVE ESTIMATING ROTOR RESISTANCE VARIATION
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| Author(s) |
C. Attaianese; I. Marongiu; A. Perfetto |
| Abstract |
An algorithm suitable for the simultaneous estimation both of the velocity and of the rotor time constant of a digitally controlled induction motor drive, is proposed in the paper. It is based on a full order flux observer structure and on an adequate arrangement of the error system. In comparison with other solutions of the same problem presented in previous papers, the considerable difference and contribution is that the numerical derivative of the stator current error is not required, thanks to an adequate approximated analytical solution of the error system. The results obtained by means of a numerical simulation are presented in order to verify the performances of the proposed algorithm. They shows a very fast drive response at the same time as an high accuracy of the estimation of the motor state and of the rotor resistance variations. |
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| Filename: | Unnamed file |
| Filesize: | 295.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2018-05-16 by System |
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