Sine Cosine Algorithm Based Shunt Active Power Filter For Harmonic Compensation

The nonlinear action of recent power electronic apparatus produces harmonics that may result in efficiency deduction, system overheating, poor power factor, voltage distortion. This paper present design of shunt active power filter for minimizing total harmonic distortion, power quality enhancement using population based sine cosine algorithm. In this paper instantaneous p-q theory is used as control active filter technique that reduces the lower order harmonics. This method recovers supply side current quality. PI controller is used as a control strategy to control DC link voltage in the system. Parameters of the PI controller are chosen by a rule that intuitively tunes them. It is identified that THD is reduced by selecting optimal value of gain parameters. Therefore, adjusting the PI controller is very necessary. In this paper Sine cosine algorithm (SCA) is used to tune PI controller gain parameters i.e. Kp, Ki for improving dynamic execution of shunt active power filter. The simulation is done in MATLAB SIMULINK SOFTWARE under varying load and supply voltage conditions.