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Reduction of Fluctuation of Wind Turbines’ Output Power by Modeling and Control

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This paper presents the development of a simplified model for wind turbine-generator unit by empirical and physical principles and enhancing its output power and frequency fluctuations. The model has been implemented by MATLAB® / SIMULINK and has reflected the main variation trends of the real wind turbine which is located in Al-Fujeij, southern Jordan. The simulation results for different sets of data have shown the validity of the proposed model and its suitability for power system studies. Furthermore, the study suggests two algorithms of the smoothing of the output power using a control system for the wind turbine generator with Energy Storage System (ESS). The idea is based on developing a computerized programmed manager for the battery, in the regulatory level, in order to perform a repeated charge / discharge process to in order discharge or inject the power to aid the real power output when it is below the external reference power and continue in the charging phase when there is much available wind energy that may exceed the reference load command sent by the energy control center. Encouraging results that may lead to feasible implementation in practice and increasing the penetration of wind energy without negatively affecting the power system frequency have been obtained.
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Wind Turbine; Mathematical Modeling; Simulation; Control; Energy Storage; Power Fluctuation

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