Three-level topology circuit.Compensate harmonics, reactive power,unbalanced load.3DSP+CPLD full digital control,efficiency>97%. Active Harmonic Filter 25AHigh efficiency Three level topology, reduce power components consumption, efficiency can reach 97%.THDi<5%Advanced software algorithms, can filter 2~50th harmonics at the same time.Compensating times can be chosen, to make efficiency higher. ...