APF is suitable for multi application accasions. We can design the most suitable installation solution for industrial occasions, distribution rooms, machine rooms etc. Because of flexible installation and convenient operation, our active power filters bring huge conveniences for solution design, on-site installation and after- sale maintaining.
When APF connects to electric network in parallel, it will measure harmonics and generate reverse compensation current to filtering harmonics by inverting.
APF measures the real-time current signals by external CT, analyzing and getting data of harmonic content. According to measured data, APF will control IGBT to generate compensating current which has the same value and the reverse phase of electric network system’s harmonics, realizing the function of filtering harmonics.
Because APF’s compensating current outputs activly with the changing of system harmonic content, it will not be over compensated. Meanwhile, APF has a function of limiting input capacity which will protect APF to avoid over-load outputing effectively.