Abstract
Abstract. In wind energy
research, airborne wind energy systems are one of the promising
energy sources in the near future. They can extract
more energy from high altitude wind currents compared to conventional wind turbines. This can be achieved with the aid of aerodynamic
lift generated by a wing tethered to the ground. Significant savings in investment costs and overall system mass would be obtained
since no tower is required. To solve the problems of wind speed uncertainty and kite deflections throughout the flight, system
identification is required. Consequently, the kite governing equations can be accurately described. In this work, a simple model was
presented for a tether with a fixed length and compared to another model for parameter estimation. In addition, for the purpose of
stabilizing the system, fuzzy control was also applied. The design of the controller was based on the concept of Mamdani. Due to its
robustness, fuzzy control can cover a wider range of different wind conditions compared to the classical controller. Finally, system
identification was compared to the simple model at various wind speeds, which helps to tune the fuzzy control
parameters.
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
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