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A Speed Observer System of the Induction Motor with Magnetising Curve Identification
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| Author(s) |
Krzemiñski Z.*, Jaderko A. |
| Abstract |
A new speed observer for control system of induction motor is proposed in the paper. Disturbances are defined, estimated and used in observer instead of products of rotor angular velocity and rotor flux vector components. The disturbances and rotor flux vector components are used to calculate the rotor angular velocity. Very low errors between the estimated and real rotor angular velocity in steady states and transients have been observed in the new observer for values very close or equal to zero. A nonlinearity of the main magnetic path is expressed as a function of a properly chosen factor versus the position vector length. The value of the mutual inductance has been calculated on the ground of the estimated values of the state variables in the fuzzy - logic algorithm of identification. The factors of the differential equations of the observer system have been modernized in each step of the observer on the ground of the calculated mutual inductance. Properties of the control system with new speed observer have been investigated and results of simulations are presented. |
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| Filename: | EPE-PEMC2000 - 224 - Krzeminski.pdf |
| Filesize: | 154.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-28 by System |
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