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    News 05.04.2018

    Storing power and heat in the district

    Sustainable energy provision is to be developed for the urban district of Rüsdorfer Kamp in Heide. The QUARREE100 research project is investigating how the district could be fully supplied with local or regional renewable energy sources. One goal is to integrate the regionally generated wind power into the regional energy system in an economically efficient and system-serving way.  more...
     
    News 21.03.2018

    Effect of wind farms on flight safety

    The approval of new wind turbines in the vicinity of radar or navigation systems in air traffic often causes conflicts, which sometimes end in court. It is undisputed that wind turbines can influence the signals emitted by radar systems and omnidirectional radio range beacons. So far, there has been a lack of scientifically valid, reproducible investigations on the actual extent. Together with their partners, the Physikalisch-Technische Bundesanstalt has developed a new measurement method and numerical simulation methods and has now published first results.  more...
     

    The wind optimises the rotor blade

    With increasing blade lengths, the aerodynamic vibration loads on rotor blades also increase. Conventional construction and control concepts are also increasingly reaching their limits. One possible solution is rotor blades with bending-torsion coupling. In strong winds, they not only bend but also twist axially. Such a demonstrator rotor blade is currently on the test stand. Once the measurements are completed, identical units will be installed on three research wind turbines.  more...
     
    News 15.02.2018

    Testing new foundations for offshore wind turbines

    Until now, most support structures for offshore wind turbines rest on piles that have been driven deep into the sand. This construction method causes noise and high technical complexity. An alternative to this are suction buckets. These are steel cylinders open at the bottom and closed at the top, which externally resemble inverted buckets and are sucked into the ground by artificial negative pressure inside. Large-scale tests are currently underway at Testzentrum Tragstrukturen in Hanover in order to optimise the installation of the bodies and investigate possible compressive and tensile loads.  more...
     

    Virtual further development of system technology

    A current challenge for the wind industry is to counter the economic pressures from the electricity market with innovative concepts. However, the route that needs to be taken until new turbines and components reach market maturity is long. In order to save time and expensive phases on the test rig, many investigations can be simulated in advance on the computer. The new WindMUSE simulation environment is multidisciplinary, integrates existing submodels using a common language and enables real-time testing. The aim is to depict wind turbines with a precision comparable to that customary in the aviation industry.  more...
     

    Sphere storage system receives German Renewables Award

    One year ago, scientists sank a concrete sphere one hundred metres below the surface of Lake Constance. The three-metre-diameter hollow body provided a functional model for an offshore pumped storage power plant. Now they have received the “German Renewables Award 2017” for their research work. The developers at Fraunhofer IWES are already planning the next step.  more...
     
    Projektinfo 14/2017

    Rain can damage rotor blades

    Rain and other weather and environmental factors can have a detrimental effect on the rotor blades of wind turbines in the long term. The leading edges of the blades are particularly susceptible to damage. Here the protective layer erodes first and material degradation subsequently continues deeper into the blade structure. A new test stand is now investigating the mechanisms involved in rain erosion in detail. The aim is to provide better protection for rotor blades in the future so that they can be used longer, thus improving the economic viability of wind turbines.  more...
     
    News 22.11.2017

    Ring generators are slimming down

    Gearless wind turbines have weight issues. The weight of a generator increases disproportionately with its output. With the current concepts, it will be difficult to pass the 10-megawatt threshold -a class of turbines that is of particular interest to offshore wind farms. In order to solve this problem, researchers are developing a new type of ring generator with a larger diameter but significantly lower weight. A scaled down test generator showed some promising results on the test rig.  more...
     

    When wind energy goes to school

    Pupils have now gone back to school in all of Germany's federal states, and the curricula for the new school year have been set. Experts led by the Independent Institute for Environmental Issues (UfU) have investigated how renewable energies can be better integrated into lessons as a subject area. For this purpose they have developed teaching materials and analysed the benefits and potential of wind turbines and photovoltaic systems at educational facilities.  more...
     
    News 10.05.2017

    40 years of energy research

    Last week, on 2nd May 2017, the German Federal Minister for Economic Affairs, Brigitte Zypries, opened the celebration for the anniversary of “40 years of energy research programmes in the German Federal Government” in the historic conference rooms of the German Federal Ministry for Economic Affairs and Energy in Berlin. She emphasised that research and development are important components in the large modernisation and investment project for energy transformation in Germany.
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