SkySails GmbH

Hamburg, Germany

SkySails GmbH

Hamburg, Germany
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News Article | September 11, 2017
Site: globenewswire.com

Dublin, Sept. 11, 2017 (GLOBE NEWSWIRE) -- The "Airborne Wind Energy (AWE) 2017-2027" report has been added to Research and Markets' offering. This 195 page report is replete with infographics, tables and graphs clarifying the variety of opportunity and technology grouped under the term AWE. It takes a strictly analytical rather than evangelical approach, pointing out that turbines lifted aloft by helium-filled aerostats make sense in Alaska, where solar cells are pretty useless and wind is sometimes weak. However, we counsel that those targeting cheap electricity for farmers with limited resources will have difficulty competing with diesel unless the law tips the playing field or obtaining fuel is problematic. AWE has moved from a hobbyist curiosity to attracting around $200 million investment from giants Google, EON, Shell, Schlumberger, Tata, Softbank and others. Two years ago it was widely seen as a solution looking for a problem. However, today, aviation authorities are adapting to accommodate the needs of these kites, tethered wings, aerostats and drones whether they are intended to power a ship, a small farm or - as GW offshore arrays - supplying a national grid. Potentially, AWE will do all that with no emissions and at a fraction of the cost of the conventional wind turbines, down where wind is weaker and more fitful. Clearly things are changing and the analysts, after two years of interviews, visits and analysis by PhD level, multi-lingual researchers, can now make sense of it all, including giving profiles of 25 winners and losers. The report appraises what remains between the proponents and commercial success, including attracting the necessary level of next-stage finance and technical assistance. How much? When? The analyst's approach is creative. We believe the new solar roads have a place on commercial ships polluting as much as 30,000 cars and, in tandem with AWE, we believe an electric ship could even become energy independent with zero emissions. We distinguish between AWE applications where the price of grid electricity is critical and where it is irrelevant. Learn the challenges of convincing all interested parties of the safety of these systems. Realistic and improving figures for maintenance, availability and life are crucial. Impediments are appraised such an electrically launched AWE system using significant energy part of the time. We report ways of reducing the intermittency and therefore energy storage needed in an AWE system and we reveal the near-consensus concerning which designs are most predictable and controllable and we assess which proponents are the most promising investments, providing certain limitations are overcome. Learn how the technologies can be leveraged with extending solar panels on the generator and wave power in the offshore support. Could the flying device produce useful solar and wind energy? How realistic is flying much higher? What are the lessons from the proponents that have gone under? What has been said in recent conferences and interviews on the subject? 1. EXECUTIVE SUMMARY AND CONCLUSIONS 1.1. Purpose of this report 1.2. Overall conclusion 1.3. Background 1.4. Diesel killer or wind turbine killer? 1.5. Energy Independent shipping 1.6. Potential for multi-mode 1.7. Choice of altitude 1.8. Capacity factor 1.9. On-grid vs off-grid, optimal power 1.10. Investment by technology: wrong focus 1.11. Technology choice 1.12. The lightning flash dilemma 1.13. The illumination at night dilemma 1.14. Killing birds and bats 1.15. Derisked technology 1.16. Autonomy 1.17. Developers 1.18. Investment timeline 1.19. Technology roadmap 1900-2037 1.20. Commercialisation roadmap 2017-2025 1.21. Market forecast 2017-2037 1.22. Sophisticated technology, often primitive marketing 1.23. Example of opportunity: Ukraine 2. INTRODUCTION 2.1. Definition of energy harvesting 2.2. Need for high power harvesting 2.3. Characteristics of energy harvesting 2.4. Two very different AWE markets 2.5. Marine: a later option 2.6. HPEH technologies including AWE 2.7. EH systems 2.8. Multiple energy harvesting 2.9. AWE in the big picture 2.10. HPEH in context: IRENA Roadmap to 27% Renewable 2.11. Electric vehicle end game: free non-stop travel 2.12. Simpler, more viable off-grid power 2.13. Microgrids attract 2.14. Capacity factors, utilisation factors and load factors 2.15. Offshore energy innovation could leverage AWES 2.16. World's biggest wind turbines go online near Liverpool UK 3. ELECTRODYNAMIC AND PHOTOVOLTAIC HARVESTING 3.1. Definition and scope 3.2. Many modes and applications compared 4. AIRBORNE WIND ENERGY AWE PRINCIPLES 4.1. Introduction 4.2. The jargon 4.3. Favoured technologies 4.4. ABB assessment 4.5. Rotating dual kites the ultimate? 4.6. Main options still taken seriously 5. SOME ACTIVE DEVELOPER/ SUPPORTER PROFILES, INTERVIEWS AND PLANS 5.1. Altaeros Energies USA 5.2. Ampyx Power Netherlands 5.3. The technology of airborne wind energy 5.4. Artemis Intelligent Power 5.5. AWESCO European Union 5.6. Bruce Banks Sails 5.7. BVG Associates 5.8. Delft University of Technology Netherlands/ Karlsruhe University of Applied Sciences Germany 5.9. e-Kite Netherlands 5.10. EnerKite Germany 5.11. Enevate BV Netherlands 5.12. e-Wind USA 5.13. Imperial College and National Wind Tunnel Facility (NWTF) 5.14. Innovate UK 5.15. Keynvor Morlift Ltd 5.16. Kite Power Solutions UK 5.17. KiteGen Italy 5.18. Kitemill Norway 5.19. Kitenergy Italy 5.20. Kitepower Netherlands 5.21. KiteX Denmark 5.22. kPower USA 5.23. Makani (Google-x) 5.24. National Composites Centre) 5.25. Open Source AWE 5.26. Pierre Benhaem, Conception, Troyes Area, France 5.27. Rotokite Italy 5.28. SkySails Power Germany 5.29. Superturbine USA, France 5.30. TwingTec Switzerland 5.31. University of Limerick 5.32. Windlift USA 5.33. Windswept and Interesting UK 5.34. Xsens Netherlands 6. LESSONS FROM THE PAST 6.1. Guangdong High Altitude Wind Power China/ SkyWind USA 6.2. Highest Wind USA 6.3. Joby Energy USA 6.4. Magenn Power Canada 6.5. Omnidea Portugal 7. EXAMPLES OF INTERVIEWS CONCERNING HIGH POWER ENERGY HARVESTING ON MARINE CRAFT For more information about this report visit https://www.researchandmarkets.com/research/9mppb8/airborne_wind


This 195 page report is replete with infographics, tables and graphs clarifying the variety of opportunity and technology grouped under the term AWE. It takes a strictly analytical rather than evangelical approach, pointing out that turbines lifted aloft by helium-filled aerostats make sense in Alaska, where solar cells are pretty useless and wind is sometimes weak. However, we counsel that those targeting cheap electricity for farmers with limited resources will have difficulty competing with diesel unless the law tips the playing field or obtaining fuel is problematic. AWE has moved from a hobbyist curiosity to attracting around $200 million investment from giants Google, EON, Shell, Schlumberger, Tata, Softbank and others. Two years ago it was widely seen as a solution looking for a problem. However, today, aviation authorities are adapting to accommodate the needs of these kites, tethered wings, aerostats and drones whether they are intended to power a ship, a small farm or - as GW offshore arrays - supplying a national grid. Potentially, AWE will do all that with no emissions and at a fraction of the cost of the conventional wind turbines, down where wind is weaker and more fitful. Clearly things are changing and the analysts, after two years of interviews, visits and analysis by PhD level, multi-lingual researchers, can now make sense of it all, including giving profiles of 25 winners and losers. The report appraises what remains between the proponents and commercial success, including attracting the necessary level of next-stage finance and technical assistance. How much? When? The analyst's approach is creative. We believe the new solar roads have a place on commercial ships polluting as much as 30,000 cars and, in tandem with AWE, we believe an electric ship could even become energy independent with zero emissions. We distinguish between AWE applications where the price of grid electricity is critical and where it is irrelevant. Learn the challenges of convincing all interested parties of the safety of these systems. Realistic and improving figures for maintenance, availability and life are crucial. Impediments are appraised such an electrically launched AWE system using significant energy part of the time. We report ways of reducing the intermittency and therefore energy storage needed in an AWE system and we reveal the near-consensus concerning which designs are most predictable and controllable and we assess which proponents are the most promising investments, providing certain limitations are overcome. Learn how the technologies can be leveraged with extending solar panels on the generator and wave power in the offshore support. Could the flying device produce useful solar and wind energy? How realistic is flying much higher? What are the lessons from the proponents that have gone under? What has been said in recent conferences and interviews on the subject? 1. EXECUTIVE SUMMARY AND CONCLUSIONS 1.1. Purpose of this report 1.2. Overall conclusion 1.3. Background 1.4. Diesel killer or wind turbine killer? 1.5. Energy Independent shipping 1.6. Potential for multi-mode 1.7. Choice of altitude 1.8. Capacity factor 1.9. On-grid vs off-grid, optimal power 1.10. Investment by technology: wrong focus 1.11. Technology choice 1.12. The lightning flash dilemma 1.13. The illumination at night dilemma 1.14. Killing birds and bats 1.15. Derisked technology 1.16. Autonomy 1.17. Developers 1.18. Investment timeline 1.19. Technology roadmap 1900-2037 1.20. Commercialisation roadmap 2017-2025 1.21. Market forecast 2017-2037 1.22. Sophisticated technology, often primitive marketing 1.23. Example of opportunity: Ukraine 2. INTRODUCTION 2.1. Definition of energy harvesting 2.2. Need for high power harvesting 2.3. Characteristics of energy harvesting 2.4. Two very different AWE markets 2.5. Marine: a later option 2.6. HPEH technologies including AWE 2.7. EH systems 2.8. Multiple energy harvesting 2.9. AWE in the big picture 2.10. HPEH in context: IRENA Roadmap to 27% Renewable 2.11. Electric vehicle end game: free non-stop travel 2.12. Simpler, more viable off-grid power 2.13. Microgrids attract 2.14. Capacity factors, utilisation factors and load factors 2.15. Offshore energy innovation could leverage AWES 2.16. World's biggest wind turbines go online near Liverpool UK 3. ELECTRODYNAMIC AND PHOTOVOLTAIC HARVESTING 3.1. Definition and scope 3.2. Many modes and applications compared 4. AIRBORNE WIND ENERGY AWE PRINCIPLES 4.1. Introduction 4.2. The jargon 4.3. Favoured technologies 4.4. ABB assessment 4.5. Rotating dual kites the ultimate? 4.6. Main options still taken seriously 5. SOME ACTIVE DEVELOPER/ SUPPORTER PROFILES, INTERVIEWS AND PLANS 5.1. Altaeros Energies USA 5.2. Ampyx Power Netherlands 5.3. The technology of airborne wind energy 5.4. Artemis Intelligent Power 5.5. AWESCO European Union 5.6. Bruce Banks Sails 5.7. BVG Associates 5.8. Delft University of Technology Netherlands/ Karlsruhe University of Applied Sciences Germany 5.9. e-Kite Netherlands 5.10. EnerKite Germany 5.11. Enevate BV Netherlands 5.12. e-Wind USA 5.13. Imperial College and National Wind Tunnel Facility (NWTF) 5.14. Innovate UK 5.15. Keynvor Morlift Ltd 5.16. Kite Power Solutions UK 5.17. KiteGen Italy 5.18. Kitemill Norway 5.19. Kitenergy Italy 5.20. Kitepower Netherlands 5.21. KiteX Denmark 5.22. kPower USA 5.23. Makani (Google-x) 5.24. National Composites Centre) 5.25. Open Source AWE 5.26. Pierre Benhaem, Conception, Troyes Area, France 5.27. Rotokite Italy 5.28. SkySails Power Germany 5.29. Superturbine USA, France 5.30. TwingTec Switzerland 5.31. University of Limerick 5.32. Windlift USA 5.33. Windswept and Interesting UK 5.34. Xsens Netherlands 6. LESSONS FROM THE PAST 6.1. Guangdong High Altitude Wind Power China/ SkyWind USA 6.2. Highest Wind USA 6.3. Joby Energy USA 6.4. Magenn Power Canada 6.5. Omnidea Portugal 7. EXAMPLES OF INTERVIEWS CONCERNING HIGH POWER ENERGY HARVESTING ON MARINE CRAFT For more information about this report visit https://www.researchandmarkets.com/research/dfmz72/airborne_wind Research and Markets Laura Wood, Senior Manager press@researchandmarkets.com For E.S.T Office Hours Call +1-917-300-0470 For U.S./CAN Toll Free Call +1-800-526-8630 For GMT Office Hours Call +353-1-416-8900 U.S. Fax: 646-607-1907 Fax (outside U.S.): +353-1-481-1716


Erhard M.,SkySails GmbH | Strauch H.,SkySails
2013 European Control Conference, ECC 2013 | Year: 2013

We present the sensor setup and the basic navigation algorithm used for the flight control of the SkySails towing kite system. Starting with brief summaries on system setup and equations of motion of the tethered kite system, we subsequently give an overview of the sensor setup, present the navigation task and discuss challenges which have to be mastered. In the second part we introduce in detail the inertial navigation algorithm which has been used for operational flights for years. The functional capability of this algorithm is illustrated by experimental flight data. Finally we suggest a modification of the algorithms as further development step in order to overcome certain limitations. © 2013 EUCA.


Grant
Agency: European Commission | Branch: H2020 | Program: MSCA-ITN-ETN | Phase: MSCA-ITN-2014-ETN | Award Amount: 3.00M | Year: 2015

The height of conventional wind turbines is limited by the enormous stresses on the structure. The idea of the Airborne Wind Energy (AWE) is to replace the most efficient part of a conventional wind turbine, the tip of the turbine blade, with a fast flying high efficiency kite, and to replace the rest of the structure by a tether which anchors the kite to the ground. Power is generated either by periodically pulling a ground based generator via a winch, or by small wind turbines mounted on the kite that exploit its fast cross wind motion. While the concept is highly promising, major academic and industrial research is still needed to achieve the performance required for industrial deployment. This can best be done by innovative junior researchers in a closely cooperating consortium of academic and industrial partners. The ITN AWESCO combines six interdisciplinary academic and four industrial network partners with seven associated partners, all selected on the basis of excellence and complementarity. All partners work already intensively on AWE systems, several with prototypes, and they are committed to create synergies via the cooperation in AWESCO. The main task is to train fourteen Early Stage Researchers (ESRs) in training-by-research and to create a closely connected new generation of leading European scientists that are ready to push the frontiers of airborne wind energy. AWESCO is the first major cooperation effort of the most important European actors in the field and will help Europe to gain a leading role in a possibly huge emerging renewable energy market, and to meet its ambitious CO2 targets. In addition, the AWESCO early stage researchers will be trained in cutting-edge simulation, design, sensing, and control technologies that are needed in many branches of engineering.


Erhard M.,SkySails GmbH | Strauch H.,SkySails GmbH
IEEE Transactions on Control Systems Technology | Year: 2013

In this paper, we present the basic features of the flight control of the SkySails towing kite system. After introducing the coordinate definitions and the basic system dynamics, we introduce a novel model used for controller design and justify its main dynamics with results from system identification based on numerous sea trials. We then present the controller design, which we successfully use for operational flights for several years. Finally, we explain the generation of dynamical flight patterns. © 2012 IEEE.


Maass J.,Hamburg University of Applied Sciences | Erhard M.,SkySails GmbH
Green Energy and Technology | Year: 2013

In order to exploit high altitude wind energy, automatic computer control of tethered kites is a key to success. In this contribution, we report on the automation experiences and development issues on the software architecture gained by the development and operation of our ship propulsion kites during the last eight years. The first part puts focus on the requirements, the architecture and the signal flows of the distributed computer control system. The second part presents control system components in detail, introduces the respective challenges and explains how these are tackled by means of software engineering techniques. We conclude with a brief description on our hardware-in-the-loop simulation and test setup. © Springer-Verlag Berlin Heidelberg 2013.


Erhard M.,SkySails GmbH | Strauch H.,SkySails GmbH
Green Energy and Technology | Year: 2013

We present a simple model for the dynamics and aerodynamics of a tethered kite system and validate it by experimental flight data. After introduction of system setup and model assumptions, the equations of motion for the kinematics are derived and discussed. Then the turn rate law for the kite response to a steering deflection is introduced. The tutorial introduction of the model is finalized by an extension for varying tether lengths, which is the regular operation mode of certain classes of airborne wind energy setups. The second part starts with a summary of the sensor setup. Then, the turn rate law, as distinguishing feature of the model, is illustrated and validated by experimental data. Subsequently, we discuss the kinematics of the kite by comparing model based prediction to experiment. Conclusively, we briefly summarize controller design considerations and discuss the flight controller performance, which further proves the validity of the model as it is based on a feed forward term which in turn, is build on the presented model. © Springer-Verlag Berlin Heidelberg 2013.


Fritz F.,SkySails GmbH
Green Energy and Technology | Year: 2013

SkySails develops and markets large automated towing kite systems for the propulsion of ships and for energy generation. Since 2008 pilot customer vessels have been operating propulsion kites in order to reduce fuel costs and emissions. In this contribution the SkySails towing kite technology is introduced and an overview over its core components kite, control pod, towing rope, and launch and retrieval system is provided. Subsequently the principles of force generation and propulsion are summarized. In the following part the system's application to airborne wind energy generation is presented, where the kite forces are used to pull the towing rope off a drum, powering a generator in the process. When the maximum tether length is reached, the kite is reeled back to the starting point using the generator as a motor. A functional model was constructed and successfully tested to prove the positive energy balance of this so-called pumping mode energy generation experimentally. An evaluation of the technology's market potential, particularly for offshore wind farms, concludes the contribution. © Springer-Verlag Berlin Heidelberg 2013.


Erhard M.,SkySails GmbH | Strauch H.,SkySails GmbH
Control Engineering Practice | Year: 2015

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 30m2 kite linked to a ground-based 50kW electrical motor/generator by a single line. © 2015 Elsevier Ltd.


The invention relates to an aerodynamic wind energy conversion device and a method for controlling such a device. The aerodynamic wind energy conversion device comprises an aerodynamic wing; at least a first tractive line and a second tractive line; wherein ends of the tractive lines are connected to line connection points located at the aerodynamic wing; at least a first and a second reefing point located across the aerodynamic wing and is characterized in that the length of the second tractive line is shorter than the length of the first tractive line; and wherein the first reefing point is spaced from the first line connection point in a first reefing distance and the second reefing point is d spaced from the second line connection point in a second reefing distance, such that the second reefing distance is longer than the first reefing distance.

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