Simulation of ac dc ac converter for closed loop operation of three phase induction motor

Abstract: The vector control analysis of an induction motor allows the decoupled analysis where the torque and the flux components can be independently controlled (just as in dc motor). This makes the analysis easier than the per phase equivalent circuit. The current control methods play an important role in power electronic circuits, particularly in current regulated PWM inverters which are widely applied in ac motor drives and continuous ac power supplies where the objective is to produce a sinusoidal ac output. The main task of the control systems in current regulated inverters is to force the current vector in the three phase load according to a reference trajectory.

Keywords: ac/dc/ac converter, induction motor, SPWM rectifier, step-down transformer, vector control.