A Series Active Power Filter Based on a Sinusoidal Current-Controlled Voltage-Source Inverter.pdf

612 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 44, NO. 5, OCTOBER 1997
A Series Active Power Filter Based on a Sinusoidal
Current-Controlled Voltage-Source Inverter
Juan W. Dixon, Senior Member, IEEE, Gustavo Venegas, and Luis A. Moran,´ Senior Member, IEEE
Abstract—A series active power filter working as a sinusoidal reasons, different solutions are being proposed to improve the
current source, in phase with the mains voltage, has been devel- practical utilization of active filters. One of them is the use of
oped and tested. The amplitude of the fundamental current in bined system of shunt passive filters and series active
the series filter is controlled through the error signal generated
between the load voltage and a preestablished reference. The filters. This solution allows one to design the active filter for
control allows an effective correction of power factor, harmonic only a fraction of the total load power, reducing costs and
distortion, and load voltage regulation. Compared with previous increasing overall system efficiency [4].
methods of control developed for series active filters, this method Series active filters work as isolators, instead of generators
is simpler to implement, because it is only required to generate a of harmonics and, hence, they use different control strategies.
sinusoidal current, in phase with the mains voltage, the amplitude