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    News 25.01.2016

    Testing rotor blades cost-effectively

    The longer the rotor blades used on wind turbines, the greater the forces acting on them. The requirements for the components rise – and with them the demands made on the testing methods. On the one hand it is important to construct the blades as durably as possible. On the other hand, however, they also need to be manufactured so that they are as cost-effective and as light as possible. If a compromise is found, this still needs to be checked in a verifiable way: on the computer and in practice.  more...
     
    News 25.11.2015

    Reliably measuring large transmission components

    Around 20 to 25 per cent of wind turbine failures are caused by damage to gears and bearings. To make the turbines more durable and safer, large gear measurement standards are used for more reliable measurements. They are intended to make wind turbines more secure and can reduce production and operating costs. The extension to a measurement laboratory in Bremen has now been inaugurated.  more...
     

    Germany’s largest nacelle test rig inaugurated

    Germany’s largest test rig for wind turbine nacelles is now in Bremerhaven. Here, drive trains with up to eight megawatts can be tested. A load transmission system mechanically simulates the wind loads occurring in the field. The Fraunhofer Institute for Wind Energy and Energy System Technology IWES recently commissioned the nacelle test rig.  more...
     

    Rotor blade, nacelle and foundation put to the test

    Whether on land or in the sea, wind turbines are getting bigger and the towers higher. All components undergo various preliminary tests, in order to ensure that they can withstand the strains that wind and weather place on them. In recent years, large test facilities have become available in Germany, in which complete rotor blades, nacelles, and foundations are tested. On 21 October 2015, centres will present their supply ranges at a workshop for experts.  more...
     

    Safely navigating jets close to wind farms

    Until now, it has been difficult or even impossible to construct wind turbines near radio range beacons or radar systems used for navigating air traffic. These systems block what would otherwise be suitable locations. The extent to which rotors deflect or change signals has, however, not yet been studied in any scientific detail. Two research teams in Braunschweig are therefore working in separate projects on these basic data.  more...
     
    Projektinfo 06/2015

    Stable grid with 100 per cent green electricity

    In a power grid, the energy provided must always be equal to the power demanded. Only then can frequency and voltage remain stable. Ensuring this is the task of grid operators. But when volatile — meaning not arbitrarily adjustable — energy sources are the main sources of electrical energy, grid operators face a challenge.  more...
     

    Testing towers and foundations

    Manufacturers are offering ever larger and more powerful wind turbines for utilising wind power. As the wind turbine sizes increase, the wind and weather take an increasing toil on the structures and turbine components. Hanover University’s Test Center Support Structures opened in 2014 to enable the components used for the tower and foundations to be tested and optimised in advance.  more...
     

    Energy research on course to delivering the energy transition

    The German federal government recently published the National Action Plan on Energy Efficiency. The concept is specifically aimed at winning over all actors in society in achieving greater energy efficiency. A few days later, the German Federal Ministry for Economic Affairs and Energy announced its research funding for the German federal government’s 6th Energy Research Programme. In the BINE interview, Dr Rodoula Tryfonidou from the responsible department in the German Federal Ministry for Economic Affairs and Energy talks about the contribution made by energy research in bringing about the Energiewende – Germany’s energy transition.  more...
     
    News 15.12.2014

    Heating system keeps rotor blades ice-free

    In cold climate zones, the wind is particularly strong meaning best conditions for a wind turbine. However, in the cold temperatures there is the danger of ice that can freeze onto rotor blades. This can lead to imbalances, impairment of the rotor blade’s aerodynamics and a drop in the efficiency of the turbine. The so-called carbon-nanotube coating offers a solution.  more...
     

    Fast-track testing of nacelles

    In Bremerhaven, a test rig is being developed that can test complete wind turbine nacelles in the multi-megawatt class. Unprecedented: a load transmission system mechanically simulates the wind loads occurring in the field. The researchers are investigating the electrical components using a simulated electricity grid. Laboratory tests are also providing information on how wind turbine concepts can be improved. With these properties, the test rig has the world’s most powerful grid simulation system.  more...
     

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26.02.2016 - 28.02.2016
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