@misc{Maciążek_Marcin_P-Q, author={Maciążek, Marcin and Pasko, Marian}, howpublished={online}, language={pol}, abstract={In this presentation methods useful for determining instantaneous power in the three-phase circuits with periodic nonsinusoidal waveforms have been presented. It may be applied to control shunt active power filter working in real-time. Shunt active filtering is an effective method to eliminate current harmonics. The theoretical considerations have been illustrated by a simulation example carried out for many various operating conditions.}, title={P-Q instantaneous power theory – a correct theory or useful algorithm for switched compensator control}, keywords={power theory, active power filter, power quality, power factor}, }