International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 05 | May -2017
p-ISSN: 2395-0072
www.irjet.net
FUZZY BASED BOOST CONVERTER CONTROL FOR WIND ENERGY CONVERSION SYSTEM D.Deva Blessy 1, J.Elsi Jasmine2 1. P.G.Student, Department of Electrical and Electronics Engineering. Bethlehem Institute of Engineering, Karungal-629157. 2. .Assistant professor, Department of Electrical and Electronics Engineering. Bethlehem Institute of Engineering, Karungal-629157. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract- In this paper the operation of wind turbine system with fuzzy based boost converter control is proposed. Generally this system consists of wind turbine, variable-speed permanent-magnet synchronous generator (PMSG), AC-DC converter (bridge rectifier+boost converter), battery, and a single phase inverter. Fuzzy logic controller is introduced in the boost converter to maintain constant output voltage. Energy storage devices are required for power balance and power quality in stand-alone wind energy systems. The power can be effectively delivered and supplied to the loads, subject to an appropriate control method. The whole proposed system is developed using MATLAB simulink software.
Key Words: Energy storage, real-time control, variable-speed permanent-magnet generators (PMSG), fuzzy logic controller (FLC), power quality, power balance.
1. INTRODUCTION OVER THE past few years, research into the use of renewable energy sources (RESs), such as wind, photovoltaic, and hydropower plants for electricity generation has been the subject of increased attention. In the case of wind energy conversion systems (WECSs), the interest is also focused. small units, used to provide electricity supply in remote areas that are beyond the reach of an electric power grid or cannot be economically connected to a grid. While large wind turbines reached their technological maturity, small-scale WECSs have to be further optimized in order to achieve integration in flexible micro grids (MGs) and increased reliability. Clusters of MGs, linked through power and data exchange highways, play a similar role in the smart grid as the power generators do in classical power systems. However, the higher flexibility of the MGs and the easier integration of RES make them more attractive. The WECSs are the most favored alternatives for supplying electricity in standalone cases at this moment due to the fact that wind energy is relatively easily harnessed, the maintenance required by the wind turbine generators is reasonable, and there is no fuel cost. Several electrical machines can be used to implement the electromechanical energy conversion and control, each of which presents different advantages and disadvantages. For smallpower wind systems operating in remote and isolated areas, the study of permanent-magnet synchronous generators (PMSGs) has been the subject of much research. PMSGs are particularly interesting in low-power wind energy applications, due to their small size and high power density. The primary advantage of PMSGs is that they do not require any external excitation current. A major cost benefit in using the PMSG is the fact that a diode bridge rectifier may be used at the generator terminals since no external excitation current is needed. The system topology used in this paper is based on a PMSG connected through a diode bridge rectifier and a boost converter to the dc link for small- and medium-power ranges. Due to the highly variable nature of the wind, the utilization of an energy storage device such as a battery can significantly enhance the reliability of a small standalone wind system. Integrating an appropriate energy storage system in conjunction with a wind generator removes the fluctuations and can maximize the reliability of the power supplied to the loads. In the autonomous system, the wind power converter may be operated to maximize the wind energy converted into electricity. The captured energy is supplied to the load directly, the difference between the wind power generation and user consumption being directed to or supplied by the battery energy storage device connected via the power electronic interface. The lead–acid batteries (LABs) are the dominant energy storage technology, with their advantages of low price, high unit voltage, stable performance, and a wide range of operating temperature. The LABs hence constitute an exciting challenge, as major components in the development of the stand-alone wind energy systems.
Š 2017, IRJET
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