Abstract
In three-phase four-wire systems and unbalanced mode, the four-leg inverters have been considered as one of the adapted topologies of the power converters for the application which require a very strict and precise control of the neutral current, caused by the unbalanced and/or nonlinear load or unbalanced source. In this paper, we present a theoretical study of the control technique for this inverter used as an active filter; this method is called a three dimensional space vector modulation (3DSVM). Simulation results are presented and discussed to verify the performance of this control method.
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