Modelling AC Induction Drive in PSpice

Problems of modelling of AC induction drive in PSpice are analyzed. Mathematical model of the motor is referred as to system of electric and magnetic circuits, which are coupled magnetically and electrically. Two systems of equations with decomposed motor variables along x and y axis are used to develop model of induction motor in PSpice. The program in Gnucap, running in Linux operational system was carried out for developing control of induction motor model. The equivalent circuit of the induction motor model in PSpice is presented. Simulation results of stator and rotor current, speed and torque at starting motor at no-load are presented and considered. Developed electromagnetic torque at the initial period of motor starting exceeds 2.2 the rated value. Stator starting current exceeds 6.5 times the rated that. Carried out model in PSpice allows to investigate transients at drive operation in motoring, breaking and generating modes. Ill. 4, bibl. 7 (in Lithuanian, summaries in English, Russian and Lithuanian).