power quality using a hybrid series active power filter

PI controller , nonlinear load, shunt active power filter, Series Active Power Filter.

hybrid active power filter is introduced for harmonic filtration in a transmission system with sources and loads. The harmonics which are generated by non-linear loads (diode bridge rectifier) are introduced into the source voltage and currents which could also be injected into other loads connected to the system. These harmonics are eliminated using a series active power filter which is connected to the transmission line through series transformers which eliminates harmonics in the source voltage and currents. Along with the series active power filter a passive filter is also connected to eliminate lower order harmonics, whereas the series active power filter eliminates lower order harmonics.