Comparative study of the SVPWM 3-D algorithms used for fourinverters

This paper deals with the comparative study of two families of algorithms used in the SVPWM 3-D control of the four leg inverters. The aim of these algorithms is the improvement of the quality of the output voltage and the absorbed load current. On the other side, the control of the fourth leg current which presents the neutral current. This is important mainly when the load is unbalanced and is generating an important amount of harmonics components that can affect the neutral of the power source. The comparison is based on the time execution, complexity and simplicity of application and measurements.