DYNAMIC ANALYSIS OF INDUCTION-MOTORS WITH SATURABLE INDUCTANCES

The paper describes the development of a computer model to simulate an induction motor including the effects of saturation on leakage and ma gnetizing inductance. The machine dynamics are presented by a set of n onlinear time-varying differential equations. The machine saturable in ductances are modeled by closed-form nonlinear functions. A 1100 W ind uction motor is tested and the machine parameters are estimated. The i dentified model is simulated using the fourth-order Runge-Kutta method for both saturable and unsaturable inductances. The model is validate d by comparing a sample simulated result with the dynamic performance measured in the laboratory.