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Roland Schmehl

  • Click here to watch the recording.
    Click here to download the presentation.

  • Discuss his May 20, 2020, webinar:   HERE  

    Airborne wind energy (AWE) is the conversion of wind energy into electricity using tethered flying devices. Some concepts combine onboard wind turbines with a conducting tether, while others convert the pulling power of the flying devices on the ground. Replacing the tower of conventional wind turbines by a lightweight tether substantially reduces the material consumption and allows for continuous adjustment of the harvesting altitude to the available wind resource. The decrease in installation cost and increase in capacity factor can potentially lead to a substantial reduction of the cost of wind energy. Wind at higher altitudes is also considered to be an energy resource that has not been exploited so far. In a first part, this talk will outline the fundamental working principles and a basic theory to describe the energy harvesting performance, using this to explore some of the technology demonstrators of leading industrial players. In a second part, the widely adopted
    pumping AWE concept will be analyzed in more detail, both theoretically as well as experimentally, with the final goal to describe the performance of AWE systems arranged in wind parks. In a last part, current research challenges are outlined, with a focus on the activities at TU Delft.

    Biography
    Roland Schmehl is Associate Professor in wind energy. He received his Ph.D. in computational fluid dynamics from Karlsruhe University in 2003 and subsequently worked as post-doctoral research fellow at the European Space Agency (ESA) on the start-up of the upper stage engine of Ariane 5. As a software architect he later developed fluid dynamic simulation methods for airbag deployment. As head of the Airborne Wind Energy Research Group, he coordinated the Marie Skłodowska-Curie Initial Training Network AWESCO (2015–2018) which addressed key challenges of AWE technologies and the H2020 “Fast Track to Innovation” project REACH (2015–2019) which commercially developed a 100 kW mobile kite power system. He currently is a Principal Investigator for TU Delft in the project NEON (2020-2023) which assesses the use of AWE technology to accelerate the energy transition in the Netherlands. He has supervised more than 60 MSc graduation projects and is currently supervising 6 PhD researchers about a broad range of AWE topics. He co-edited the textbooks “Airborne Wind Energy” published in 2013 and in 2018 by Springer and co-organised the 2015, 2017 and 2019 international Airborne Wind Energy Conferences (AWEC) in Delft, Freiburg and Glasgow, that each attracted more than 200 participants from industry and academia. He is the author of more than 100 scientific publications. He is chair of the European Academy for Wind Energy (EAWE) Technical Committee “Airborne Wind Energy”.

    Completed. See above for link to recording.

Topic  
Roland Schmehl    -- his AWE doings, presentations, videos, ...
Send AWE notes and topic replies to editor@upperwindpower.com
  • kite park
  • kite farm
  • Coming soon: release of data of TUDelft experiments ... 2020 ?

Works in 2020

R. Borobia-Moreno, D. Ramiro-Rebollo, R. Schmehl, G. Sánchez-Arriaga: "Identi cation of kite aerodynamic characteristics using the estimation before modeling technique". Wind Energy, under review, 2020.

S. Rapp, R. Schmehl: "Enhancing Control System Resilience for Airborne Wind Energy Systems Through Upset Condition Avoidance". AIAA Journal of Guidance, Control and Dynamics, under review, 2020. arxiv:2004.02730 [eess.SY].

M.A. Rushdi, R. Schmehl, T.N. Dief, S. Yoshida, D. Fujimoto, K. Sawano: "Towing test data of the Kyushu University kite system". 4TU.Centre for Research Data, Dataset, 2020. doi:10.4121/uuid:c3cee766-2804-4c00-924f-8a9f6c8122fc.

M. A. Rushdi, A. A. Rushdi, T. N. Dief, A. M. Halawa, S. Yoshida, R. Schmehl: "Power Prediction of Airborne Wind Energy Systems using Multivariate Machine Learning". Energies, Vol. 13, No. 9, pp. 2367, 2020. doi:10.3390/en13092367.

N. Krishnan, A. Viré, R. Schmehl, G. van Bussel: "An immersed boundary method based on domain decomposition". Computers & Fluids, pp. 104500, 2020. doi:10.1016/j.compfluid.2020.104500. PDF

M. Schelbergen, P. C. Kalverla, R. Schmehl, S. J. Watson: "Clustering wind profile shapes to estimate airborne wind energy production". Wind Energy Science Discussions, under review, 2020. doi:10.5194/wes-2019-108.

T. N. Dief, U. Fechner, R. Schmehl, S. Yoshida, M. A. Rushdi: "Adaptive Flight Path Control of Airborne Wind Energy Systems". Energies, Vol. 13, No. 3, 2020. doi:10.3390/en13030667

A. A. Candade, M. Ranneberg, R. Schmehl: "Structural Analysis and Optimization of a Tethered Swept Wing for Airborne Wind Energy Generation". Wind Energy, Vol. 23, No. 4, pp. 1006-1025, 2020. doi:10.1002/we.2469.

M. A. Rushdi, A. Hussein, T. N. Dief, S. Yoshida, R. Schmehl: "Simulation of the Transition Phase for an Optimally-Controlled Tethered VTOL Rigid Aircraft for AirborneWind Energy Generation". AIAA 2020-1243, AIAA Scitech 2020 Forum, Orlando, FL, 6-10 January 2020. doi:10.2514/6.2020-1243. PDF
June 12, 2020, post by Dave Santos   (ds)
Roland,
On the plus side to webinar reaction, AWEC2020teleconference academic virtual-tracks coming along, and your paper production leads. Perhaps a Germy Prize is in order, if you hit on some tangible paradigm breakthrough.

Ironically, AWEC2020, by leaving nothing out, will be the most informative annual online compendium, ever, without tired academic committee or insider preferences needed, nor loss in modest quality. New classic papers still wanted. The year is far from over.

An AWEC2021SeaTac pivot would revitalize physical AWECs. Greater hands-on demo flying would be a key reform over VC insider preference. Its the Great AWE Shake-Up. Not even Google could stop it.

Say, did kPower's Delta Vortex Lift mode identification make it into the pending Wind Energy paper? It was a lift-anomaly in Gonzalo's initial aerodynamic parameterization data.

ds