A Comparative Analysis of Integrated Boost Flyback Converter using PID and Fuzzy Controller

Abstract

This paper presents a comparative analysis of Integrated boost flyback converter for Renewable energy System. IBFC is the combination of boost converter and fly back converter. The proposed converter is simulated in open and closed loop using PID and FUZZY controller. The Fuzzy Logic Controller (FLC) is used reduce the rise time, settling time to almost negligible and try to remove the delay time and inverted response. The performance of IBFC with fuzzy logic controller is found better instead of PID controller. The simulation results are verified experimentally and the output of converter is free from ripples and has regulated output voltage. Corresponding Author: Keyword: Fuzzy controllerR. Samuel Rajesh Babu Departement of Electronics and Instrumentation Engineering, Sathyabama University, Chennai-600 119, India. Email: dr.samuelrajeshbabu@gmail.com INTRODUCTIONRenewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale such as sunlight, wind, rain, tides, waves and geothermal heat. Renewable energy replaces conventional fuels in four distinct areas such as electricity generation, hot water/space heating, motor fuels, and rural (off-grid) energy services [1][2][3]. Modern renewables such as hydro, wind, solar and biofuels, as well as traditional biomass are contributed in about equal parts to the global energy supply. Rapid development of renewable energy and energy efficiency is resulting in significant energy security, climate change mitigation and economic benefits [4][5][6][7].Fossil fuels such as coal, oil, and natural gas are non-renewable, they draw on finite resources that will eventually dwindle, becoming too expensive or too environmentally damaging to retrieve [8][9][10][11][12]. In contrast, renewable energy resources-such as wind and solar energyare constantly replenished and will never run out. For renewable energy systems, power electronics play a vital role. Sometimes they are the most expensive part of the system. Reducing cost, increasing efficiency and improving reliability of power electronics and electric machines are the technical challenges facing wider implementation of renewable energy power generation [13][14][15][16][17]. Renewable energy sources derive their energy from existing flow of energy, form on-going natural processes such as sun, wind, flowing water and geothermal heat flows. The most feasible alternative energy sources include solar, fuel cell and wind.Fossil fuels are depleting day by day, therefore it is imperative to find out alternative methods in order to fulfill the energy demand of the world. Renewable energy is becoming more important nowadays. There exist applications of renewable energy which employ hundred of MW (high power) and there are also those which uses hundred of W (low power). Applications can also be classified depending if they are connected to the grid or not, as well known as cogeneration and stand alone systems [18][19][20][21][22]. This last one is

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