Print Email Facebook Twitter Control of a Drag Power Kite over the Entire Wind Speed Range Title Control of a Drag Power Kite over the Entire Wind Speed Range Author Bauer, Florian (Technische Universität München) Petzold, Daniel (Technische Universität München) Kennel, Ralph M. (Technische Universität München) Campagnolo, Filippo (Technische Universität München) Schmehl, R. (TU Delft Wind Energy) Date 2019 Abstract A control scheme for drag power kites, also known as airborne wind turbines, for the entire wind speed range is proposed, including 1) a temperature controller allowing for temporary overloading of the powertrain; 2) a limitation controller ensuring that power, force, speed, and actuator constraints are satisfied; 3) a tangential flight speed controller; and 4) a tangential force control allocation, which inverts the nonline arities of the plant and allocates the flight speed controller’s tangential force demand to the available actuators. The drag power kite plant model is based on a point-mass model and a simple aerodynamics model with various drag contributions. Simulations are conducted with the parameters of the 20 kW Wing 7 developed by Makani Power, Inc. The proper working of the control scheme is indicated by the good match of the simulation results with independent simulation results and measurements published by Makani. A temporary overloading of the power train with about twice the nominal power can be concluded as a requirement; otherwise the mean power would be significantly lower. Because of the reduction of the lift and thus reduction of the centripetal force at high wind speeds, the inside-down figure eight can be concluded as the best pattern. To reference this document use: http://resolver.tudelft.nl/uuid:6f91416b-e39c-4b78-aae6-f9bc0410a813 DOI https://doi.org/10.2514/1.G004207 Embargo date 2020-02-01 ISSN 0731-5090 Source Journal of Guidance, Control, and Dynamics: devoted to the technology of dynamics and control, 42 (10), 2167-2182 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2019 Florian Bauer, Daniel Petzold, Ralph M. Kennel, Filippo Campagnolo, R. Schmehl Files PDF 1.g004207.pdf 1.3 MB Close viewer /islandora/object/uuid:6f91416b-e39c-4b78-aae6-f9bc0410a813/datastream/OBJ/view