A novel combined control algorithm for the hybrid active power filter applied to high voltage grid

This paper presented a novel combined control algorithm for the hybrid active power filter (APF) applied to high voltage grid. The algorithm can meet the requirements of control stability and harmonic compensation effect at the same time. With the proposed control strategy, the hybrid APF can compensate some appointed load harmonic accurately and compensate other harmonic partially, it can also damp the possible resonance between the grid impedance and filter. The algorithm is characterized by filtering performance and easy realization, and is suitable for harmonic compensation in high voltage system. Theoretical analysis is verified by simulation and experimental results.