This paper deals with the development of design, modelling and simulation of closed loop control of simulation model and characteristics behaviour of the efficient z-source inverter for power drives. These are simulated through computer software tool using MATLAB/SIMULINK VERSION 7.9. This project presents the development of design, modelling and simulation for maintaining voltage and rated speed of the motor. Traditionally there are two inverters namely Voltage Source Inverter and Current Source Inverter. Each inverter has six switches in the main circuit. These switches are power switches with anti-parallel diodes. These diodes provide bi-directional current flow and voltage blocking capability. The proposed method presents a latest technique in motor drive operation called simulation model and characteristics behaviour of the efficient z-source inverter for power drives which comes under such category of stabilizing the output voltage of an AC Motor. Impedance Source Inverter can be applied to the entire spectrum of power conversion.