Indian Journal of Science and Technology

Abstract

Objective: This paper proposes new integration to reduce Total Harmonic Distortion (THD) in grid connected system. Methods/statistical Analysis: We implementANFIS based controller technique is used in grid integration to reduce THD content. Simulation results shows that ANFIS controller has less THD and good efficiency when compared to that of FUZZY logic controller. Findings: Now a day’s world energy consumption is increasing due to commercialization of world. It reduces non renewable energy resources, because lot of energy generation requires more conventional sources. To meet these increasing loads renewable energy generation is implementing, and many are going to get maximum power extraction from available source. In distribution energy resources solar power generation plays an important role. Solar power generation depends on irradiation level availability. Power generation from (Photovoltaic) system is highly fluctuating because irradiation continuously changes based on climatic conditions. PV system grid integration involves a converter; it injects harmonics source side and grid side. Therefore, ANFIS control can be used to improve the THD in grid connected PV systems. A comparison of PI, hysteresis control and fuzzy logic control, ANFIS control gives the feasibility of the method. Thus the proposed scheme ensures that the THD in the injected grid current remains within the specified limits. MATLAB/Simulink model is developed for the proposed work. Simulation results are given to show the overall system performance. Applications: Efficiency and overall performance is good compared to FUZZY controller.
Keywords: ANFIS Control, Fuzzy Control, Grid Integration, MPPT, PV System, THD