Abstract: In the past several years, there is rapid increase of power electronics-based loads connected to low and medium voltage power distribution systems. As these loads draw non sinusoidal current from the mains, it degrades the power quality by causing Harmonic distortion. So to reduce harmonics and to increase power quality Space vector control strategy is presented for three phase inverter system operating under highly nonlinear loads. Pulse width modulation are mainly used in industrial application for better performance. Proportional Integral (PI) controller is used to design SVPWM in closed loop. The proposed controller design generates gating signals which drives inverter and guarantees high quality output with less distortion for non linear load. MATLAB/SIMULINK is used for designing and development of SVPWM based three phase inverter.

Keywords: Inverter , non linear load, PI controller, Space Vector PWM.