Control Techniques For Active Power Filter For Harmonic Elimination & Power Quality Improvement
Power electronic loads are being connected to the distributed power plants through power electronic converters
and these power electronic converters and loads are the source of harmonics and reactive power which affects the
performance of the power system network. Switching compensators called Active filters or active power line conditioners
brings an effective alternative to the conventional passive LC filters as they can compensate for several harmonic orders, and
are unaffected by major changes in network characteristics, avoiding the risk of resonance between the filter and network
impedance and are compact and robust compared with traditional passive compensators.
The aim of this work is to design shunt active filter to mitigate and alleviate the harmonics and reactive power issues with
controller based on different theories under unbalanced and distorted regimes. In this paper a control method for active
power filter using Space Vector Pulse Width Modulation (SVPWM) is compared with other control techniques.
Index Terms— PWM,SVPWM,THD,SAPF,P-Q Theory.