A new version of phase-variable modeling of an induction motor using PSIM

This paper presents the construction of the phase-variable model of a three-phase ac induction motor in PSIM simulation tool. The modeling can be divided into an electromagnetic part, an electromechanical part, and a mechanical part. There are two features of the constructed model block. One feature is that the three-phase inputs are circuit-based, so it can be directly connected to the inverter for integrated system simulation. The other feature is that the load torque input is equation-based, so the load torque can be more easily given by a mathematical function. The constructed model block has been compared with the available build-in model block in PSIM and MATLAB/Simulink, respectively. Simulation results show that the correctness of the constructed model in steady-state and transient responses.