Modeling and Simulation of Novel Three-phase Series APF Based on Dual-loop Control

The harmonic and reactive components of power network can be compensated dynamically by active power filter (APF). On the analysis of DC side shut APF with rectifier bridge, the basic topology of three-phase DC side series active power filter was proposed, and the mathematical model based on the dual-loop control was presented too. The correctness of the basic structure and control model was proved in theory. Simulation and analysis of the three-phase supply currents with compensation or not were proposed. The results show that the total harmonic distortion of every phase is greatly reduced with compensation and the supply currents are sine waves with supply voltages on the same frequency and same phase. The theory and simulation result prove that the novel APF can compensate effect.