Modelling and Deisgn of Rotor Kite Experimental Setup for Airborne Wind Energy

Mopidevi Om Sai Swaroop

Tuesday, October 01, 2019, 11:00

Room 01-012, Georges-Köhler-Allee 102, Freiburg 79110, Germany

A Rotorkite is a type of airborne wind energy system that can be used to exploit high altitude wind energy. In this thesis, a rotor kite is modeled based on the working principle of an autogyro known as autorotation. This system is a ground generation, pumping system, in which the rotor blades play the role of rigid wings operating in crosswind.
During the operation of a Rotorkite the air moves through the rotor and interacts with the blades. The result of this interaction it's assumed to be described with an aerodynamic force acting in the center of the rotor. This force is used to pull the tether and extract energy from the wind flow.
The aerodynamic force depend on several factors. In this research, the variation of this force at different incidence angles of the rotor and different geometric parameters of the blades of the rotor are investigated. To validate this model an experimental setup is designed and build, then experimental data are compared with model predictions. It is observed that the rotor parameters have significant effects on the performance of the kite.
In this work, different phases of the kite operation are also discussed. In the operation of rotor kite, after the reel out phase, the rotor has to come back to start another power cycle. For this, a trajectory has been proposed.