Transient and Numerical Models of Three-Phase Induction Motor

The two different mathematical models of three-phase induction motor are derived in order to estimate the motor dynamic behavior during acceleration in different operating modes. The first model is derived from a set of differential equations applied and solved in Simulink. The second model and its set of differential equations are solved using numerical methods in Matlab. The analytical calculation, the experiment, the Finite Element Method (FEM) and the motor model in PSIM software verify the results of both motor transient models. The FEM motor model allows calculation of the magnetic flux density distribution in the motor’s cross-section and in the air gap. Additionally, the torque is calculated in the FEM model for different operating speeds and its value is compared with the previously obtained results from the transient models