Analysis of Different Loads with Multi-techniques Using D- Statcom
نویسنده
چکیده
Due to the rapid growth of non-linear loads, such as power electronic control equipments and Electric arc furnace (EAF) power quality problems such as harmonics and voltage flicker are introduced in the power system. It occurs because of the time-varying and nonlinear behaviour of the Load. Arc furnaces are used in industries for induction heating and welding. Hence an Electric arc furnace model is needed to analyze the power quality. In this paper, different non-linear loads such as a time domain model called hyperbolic model for electric arc furnace, unbalanced RL load and also three phase bridge rectifier is analyzed using MATLAB. The model is used to study its behaviour on the power system using MATLAB. To improve the power quality DSTATCOM is proposed, in which the control strategies used are Hysteresis controller and Fuzzy Based PI controller.Hysteresis controller uses Hysteresis Bandwidth to produce the switching signals. Fuzzy based controller automatically changes the value of gain constants depending upon the requirement with the help of membership function.Control strategies used in D-statcom are simulated using MATLAB/SIMULINK.
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