MODELING AND ANALYSIS OF A FOUR-LEG INVERTER USING SPACE VECTOR PULSE WIDTH MODULATION
Abstract
The bad effect of zero sequence current in unbalanced load when connected to three-leg inverter, is the main challenge leading to add fourth leg and using three dimensional space vector pulse width modulation (3-D) SVPWM technique to handle this problem. The paper presents an analysis and study of this technique, depending on the average large signal model. This technique simulated by using Matlab/Simulink and the results shows good performance with low THD for different operating conditions.
Keywords
Three-dimensional space vector modulation, 3-D SVM, three-phase four-leg voltage source inverter, 3P4L-VSI, Inverter-based distributed generation, IBDG, Zero Switching Vectors, ZSV, Non- Zero Switching Vector, NZSV.Metrics