Energy harvesting based on tethered kites benefits from exploiting higher wind speeds at higher altitudes. The setup considered in this paper is based on a pumping cycle. It generates energy by winching out at high tether forces, driving an electrical generator while flying crosswind. Then it winches in at a stationary neutral position, thus leaving a net amount of generated energy. The focus of this paper is put on the flight control design, which implements an accurate direction control towards target points and allows for a flight with an eight-down pattern. An extended overview on the control system approach, as well as details of each element of the flight controller, is presented. The control architecture is motivated by a simple, yet comprehensive model for the kite dynamics. In addition, winch strategies based on an optimization scheme are presented. In order to demonstrate the real world functionality of the presented algorithms, flight data from a fully automated pumping-cycle operation of a small-scale prototype are given. The setup is based on a 30 m2 kite linked to a ground-based 50 kW electrical motor/generator by a single line.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Flight control of tethered kites in autonomous pumping cycles for airborne wind energy


    Beteiligte:
    Erhard, Michael (Autor:in) / Strauch, Hans (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2015


    Format / Umfang :

    14 Seiten, 30 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Automatic Flight Control of Tethered Kites for Power Generation

    Jehle, Claudius | BASE | 2013

    Freier Zugriff

    Autonomous Takeoff and Flight of a Tethered Aircraft for Airborne Wind Energy

    FAGIANO, LORENZO MARIO / Nguyen Van, Eric / Rager, Felix et al. | BASE | 2018

    Freier Zugriff

    Optimal Cross-Wind Towing and Power Generation with Tethered Kites

    Williams, Paul / Lansdorp, Bas / Ockels, Wubbo | AIAA | 2007


    Optimal Cross-Wind Towing and Power Generation with Tethered Kites AIAA Paper

    Williams, P. / Lansdorp, B. / Ockels, W. | British Library Conference Proceedings | 2007


    Optimal Crosswind Towing and Power Generation with Tethered Kites

    Williams, Paul / Lansdorp, Bas / Ockesl, Wubbo | AIAA | 2008