The current situation and development of Active Power Filter technology

With the wide range of power electronic device applications and the connection of new energy resources to the electricity grid, a lot of harmonic problem will cause the instability of the grid system, the interference and malfunction of the other electric equipment, and affect the safety of the power supply system and equipment operation. This paper mainly discusses the comprehensive research background and development situation of the APF (Active Power Filter) technology, summarize the future development and the market prospect.