Introduction
SFR-APF series active harmonic filter module is a new type of power electronic device used for dynamic harmonic filtering and reactive power compensation. It can filter and compensate harmonics (varying in size and frequency) and dynamic reactive power in real time to overcome the shortcomings of traditional harmonic suppression and reactive power compensation methods such as traditional filters, and realize the harmonic filtering function and reactive power compensation function of the system. It is widely used in power, metallurgy, petroleum, port, chemical and industrial and mining.