Wind research

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

The 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, the IWES is…

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

Part 2: Rapid testing of blade bearings – from the desk to the test bench The first milestones on our journey to a blade bearing test are described in part 1. In mid-2013, we submitted a project outline with the…

Is the wind farm tapping its full potential? – The post-construction analysis has the answers

All wind turbine and wind farm operators and owners know what questions to expect at the end of each quarter or the year: Is the energy yield satisfactory? What does the wind farm’s yield to date mean for the future?…

RAVE: Ten years of measurement data for offshore wind energy research

An ambitious measuring campaign has been under way at the alpha ventus offshore wind farm ever since it was installed back in 2010. The measurement data from the wind turbines, the substation, and the marine environment are available to scientists…

Putting the seabed under the microscope: ultra-high-resolution multichannel seismics

The wind resource and soil conditions in particular are often investigated when planning the exact sites of individual wind turbines within a planned offshore wind farm. The Fraunhofer IWES employs acoustic methods to characterize the subsurface, thereby contributing to efficient…

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

Part 1: Rapid testing of blade bearings – but how? Back in 2013, the Fraunhofer IWES was still only a fairly small Fraunhofer institute and many of the test benches which would later shape the image of the institute were…