FOUR-LEGGED ACTIVE POWER FILTER COMPENSATION FOR A UTILITY DISTRIBUTION SYSTEM

Abdelaziz Chaghi - Amor Guettafi - Azzedine Benoudjit

   This paper presents a four-leg static converter to balance a three-phase four wire utility distribution system. The balancing strategy is based on a four-legged power converter used to provide a path for the neutral current due to an unbalanced load. The compensating technique uses a three-dimensional space vector modulation in the α-β-γ coordinate system. To validate the proposed approach, simulation results are presented and discussed.

Keywords: three-phase-four wire, active filter, harmonics, three dimension, space vector modulation

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