Wind research

Lidar-Boje auf der Fläche N-7.2

Waves, buoys, offshore wind energy: Wind measurement in the German Bight

Fraunhofer IWES Wind Lidar Buoys floated in the German Bight, east of the Bard Offshore 1 wind farm, at times last year. These yellow buoys ensure that comprehensive wind measurement data and meteorological parameters can be precisely recorded and evaluated….

Large-Scale Wind Farm Effects – A Key Contributor for Economic Wind Farm Operation?

Ever since the construction of the first wind farms began in the 1980s, the impact of wind turbines on the flow – the wake effect – has been a major focus not only in the field of wind energy research…

How do resonance-based testing methods increase the efficiency and lifespans of support structures?

Efficient use of materials and a long lifespan are important KPIs in the optimization of offshore wind turbines. For future, larger support structures, which are particularly expected in wind farms at greater water depths, the behavior of the foundations, in…

Wind farm optimization: Higher yield thanks to intelligent operational management

When the wind passes through the rotor disc of a wind turbine with its rotating blades, the wind speed behind the turbine is reduced – the turbine extracts kinetic energy from the wind to convert it into electrical energy. This…

Bundled wind energy expertise for virtual turbine models

Many analyses in the field of wind energy are based on virtual models. However, these simulation models are not freely available for every real wind turbine. Fraunhofer IWES solves this problem with an innovative approach. Researchers at IWES are currently…

Blog post in three parts – The road to the blade bearing test

Part 3: Rapid testing of blade bearings – The first endurance run. In Part 1, I introduced the idea of an accelerated endurance run for blade bearings, which would consist of all wear-inducing cycles in direct succession. In Part 2,…

Virtual testing of rotor blade bearings – BEAT6.1

The deformation under load and the load distribution within the bearing are of great significance for the design of large rolling bearings such as rotor blade bearings. FE models are indispensable when it comes to determining the load distribution and…

Power converter reliability: Field measurements illuminate climatic stress

Power converters are among the most frequently failing components of wind turbines. The causes remained unexplained for many years. Seasonal failure patterns point to environmental influences and shift the focus to the climatic conditions to which the power electronics are…

20,000 operating years: Data analysis generates added value from field data

Wind turbines generate electricity – and a whole lot of data. The amount of data is growing continuously as the number of operating years increases, but also as turbines are equipped with more and more sensors and operating data with…

Small yet impressive – scaled development environment with hexapods

Author: Dipl.-Ing. Norbert EichThe Fraunhofer IWES has commissioned a development environment to test mechanical application for research purposes. Improved control concepts and mechanical issues can thus be tested more quickly more cost-effectively and in parallel with productive operation. With this,…