Modelling and simulation of a multilevel inverter using space vector modulation technique to mitigate for power quality problems

Multi-level Inverters offer several advantages such as a better output voltage with reduced total harmonic distortion (THD), reduction of voltage ratings of the power semiconductor switching devices etc. In this paper shows DVR is design nine levels cascaded Multi-level Inverters for minimised power quality problems. Power quality problems known as sag swell, Power factor improvement, Total Harmonic distortion (THD) etc. Multilevel inverters synthesis the AC output voltages from various DC voltages. Space Vector Modulation (SVM) is one of the most popular PWM techniques used in multilevel Inverters. SVM provides a best space vector performance, sequences of different space vectors suitable for voltage source inverter is identified. In this paper a 9 level cascaded H-bridge inverter model for space vector PWM is established and simulated using MATLAB/SIMULINK software. The simulation study reveals that space vector PWM utilizes dc bus voltage more effectively and generates less THD.