A Novel Active Power Filter for the Voltage-Source Type Harmonic Source

There are two kinds of harmonic sources in power system, i.e., voltage-type harmonic source and current-type harmonic source, in the paper the physical essential of the two kinds of harmonic sources is firstly analyzed by simulation. And then a novel series active power filter is proposed when the load is voltage type harmonic source. The novel series active power filter is from the active power filter with fundamental magnetic flux compensation (FMFC). The difference between the proposed active power filter and the active power filter with FMFC is that the proposed active filter is without passive filter and the proposed active filter is only suitable for the filtering of the voltage type harmonic source. Therefore the novel series active power filter is with smaller bulk and lower cost. The main circuit and filtering principle are analyzed in detail in the paper. The simulation model is established while the load is voltage-type harmonic source. The simulation results verify the principle analysis.