Synchronous Link Converter based Scheme of Harmonic Filtration for Non-Linear Load

Abstract

Interference due to harmonics, and generated current distortions by power electronic devices, has become a serious problem in present time. As now a days converters, which are nonlinear devices, are more and more frequently used in industrial applications, in transmission and distribution systems and in power plants. The use of non linear load by industrial or commercial purpose generates harmonic distortion, poor power factor, voltage instability, imbalance impact on the efficiency of electrical equipments in our system. The most suitable way to solve these problems is the introduction of synchronous link converter for power quality analysis for non linear loads. This paper presents the use of SLC to overcome these problems[11]. Fast Fourier transforms describe the total harmonic distortions (THD) in the line current for given non-linear system. PID controller is used here to control the action of active power filter according to required current generation, which is to be injected in distorted supply current to make it sinusoidal. The models are designed and simulated using MATLAB/SIMULINK software.