Application of active power filter for compensating unbalanced load currents using symmetrical component theory

The excessive unbalanced current in the network cause voltage distortion, excessive flow of neutral current, heating of electrical machines, transformers and poor power factor in the most primitive form of load compensation. The load compensation based on application of active power filter for symmetrical component theory is much simpler than p-q theory. It does not require complex transformations of currents and can effectively control the unbalanced load currents. The application of active power filter based on symmetrical component theory used for six different cases and the load compensation results obtained through MATLAB programming.