Comparison of the compensation quality for active power filter control techniques

Four modified block diagrams and calculated ratios for the control systems synthesis of the shunt active power filter for industrial energy supply systems are proposed. Comparison of the corresponding quality compensation control techniques for the shunt active power filter is made. It is proved that for three-phase four-wire electric energy networks with asymmetrical or semiconductor consumers and power source under practical conditions, preference should be given to proportional-vector control algorithms.