Overview of the Controllers Used for Mitigation of Harmonics Injected Due to Nonlinear Loads

The harmonics distortion due to huge non linear loads is always a serious concern of any power system. The harmonics not only increases the distortion in the supply but causes the power factor to be lowered. To improve upon these conditions, various harmonic controllers are used in conjunction with the power system. The researchers and technocrats are working on various aspects to be improved for assured better power quality to be achieved. This paper have presented the comparison of various power controllers to improve the performance of the system. Active and passive both the methods are found suitable for various systems. This paper have tried concluding with the identification of the suitable controlling method of harmonics for PV systems connected to the non linear loads through the power grid. For the countries like India, photovoltaic will be the most contributing electricity source in coming future. This paper have presented the system with consideration of the filter requirement for improving the performance of the PV system in this paper. MATLAB implementation of the system is presented in this paper.