A Simulink state-space model of induction machines including magnetizing-flux saturation

Nowadays numerous techniques to model the behaviour of electrical drives are discussed in the literature. In many cases a linear magnetic network is proposed. This paper proposes a large-signal simulation model of an induction machine that takes into account the magnetizing-flux saturation. The model is given as a state-space model with nonlinear feedback and is implemented in Matlab/Simulinkreg. The advantages of the proposed model include versatility and ease of use. Simulation results from both this model and a linear flux model show the differences between the models. Advantages and disadvantages of the proposed simulation model are discussed and the area of application is defined. The usefulness of the model to study large transients and the dynamic behaviour of induction machines in control loops is discussed. For this purpose the proposed model is used to simulate induction machines in drives, such as direct torque control and indirect field orientation