Advanced Induction Machine model in Phase Coordinates for Wind Turbine Application

In this paper an advanced phase coordinates squirrel cage induction machine model with time varying electrical parameters affected by magnetic saturation and rotor deep bar effects, is presented. The model uses standard data sheet for characterization of the electrical parameters, it is developed in C-code and interfaced with Matlab/Simulink through an S-Function. The investigation is conducted in the way to study the ride through capability of Squirrel Cage Induction Generators and compares the behavior of the classical DQ0 model, ABC/abc model in phase coordinate with constant parameters and the proposed ABC/abc phase coordinate with varying parameters model, in the presence of external faults. The results are promising for protection and control applications of fixed speed active stall controlled wind turbines. This new approach is useful to support control and planning of wind turbines and to fulfill the grid code requirements.

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