Power Improvement by Mitigating the Harmonic Distortions

Abstract

The study of harmonics in power systems (PS) is very crucial and mitigation of harmonic distortions is one of the main issues these days. Harmonics are distortions in the waveform of a power system with a frequency that is an integral multiple of the frequency variable of the fundamental power line. In this research, our main concern is to design a complete PS model, analyze the effect of nonlinear loads, and mitigate the distortions in PS due to nonlinear loads. We are using three types of filters i.e. series passive, shunt passive, and shunt active filter. The main difference between an active and a passive filter is that we can alter the gain of the active filter even before implementing the model while the gain of the passive filter is fixed and cannot be changed after the model is implemented. Different techniques of active and passive filters are discussed. Furthermore, the SIMULINK model for active and passive filters is presented for validation of our methodology.