Dynamic modeling and control of shunt active power filter

Overall performance of the shunt active power filter depends on the method of reference current extraction. The conventional extraction methods for harmonic and reactive currents is having inaccuracy, in case of distorted and unbalanced supply; non-linear and unbalanced load. Based on adaptive interference cancelling theory, a method is presented to estimate the harmonic, fundamental frequency unbalanced and reactive current components. A simulation is performed in MATLAB/SIMULINK environment which to verify the feasibility of the proposed method. This method can be useful for the dynamic compensation equipment such as static Var compensator, unified power quality conditioner and so on.