CWD
  • Conference for Wind Power Drives 2017
    Conference for Wind Power Drives 2017
  • Aufbau FVA-Gondel
    Aufbau FVA-Gondel
  • Conference for Wind Power Drives 2017
    Conference for Wind Power Drives 2017
  • Center for Wind power drives
    Center for Wind power drives
  • Conference for Wind Power Drives 2017
    Conference for Wind Power Drives 2017
  • Aufbau FVA-Gondel
    Aufbau FVA-Gondel
  • Vorstellung des 4MW Prüfstandes
    Vorstellung des 4MW Prüfstandes
  • 4MW-Prüfstand mit HybridDrive
    4MW-Prüfstand mit HybridDrive
  • 1MW-Prüfstand
    1MW-Prüfstand
  • Campus Melaten
    Campus Melaten

This website provides information on all completed projects. For further information please click on the headlines of the seperate projects.

Soil-structure-drive train interaction

Traditional design guidelines recommend the separation of the lowest resonance frequencies for the components and the overall system. A sufficient offset to the low order excitation frequency is advised. Due to the fact that for high-capacity purposes higher and slender towers will be built, these guidelines are not sufficient anymore. However, an optimal design and a perfect match of the operational components can only be achieved by the dynamic analysis of the overall system. Hence, the aim of the project was to investigate the dynamic behavior of the overall system to account for the interaction of aerodynamics, dynamic of the engine and structural dynamics of the tower including soil-structure interactions. The results lead to an optimal design of the wind turbine to increase fatigue and abrasion behavior and thus down time and maintenance work is minimized.

Rapid Wind

In this research project, a novel drive train for multi-megawatt wind turbines will be designed, whereby a fusion of the multiple-generator concept and the high-speed application of electric machines takes place. The aim is to combine the specific advantages of both concepts to achieve opposite aims, such as material and cost savings while increasing the availability as well as reaching the same or improved energy efficiency.

Acoustic properties main gearbox

Since the productive onshore sites for wind turbines are limited, currently the installation sites grow closer to residential areas. Hence the acoustic emitions of the wind turbines become more and more critical.

Pitch System

Modern variable speed wind turbines have adjustable rotor blades for power control. Today, for safety reasons one pitch drive per blade is required to control them independently, so that even in cases of the loss of one pitch drive, the system can still be braked aerodynamically.

Trailing Edge Flaps

The time-varying wind loads on the rotor of a wind turbine (WT) can cause damages within the drive train. It shall be investigated to what extent active aerodynamic measures, such as flaps on the rotor, can reduce these loads.

Alternative drive train concepts

The fourth work package focuses on the analysis of innovative drive train concepts in order to increase the economic efficiency and the technical availability of wind turbines.

Condition Monitoring System

The goal of this work package is the development of a cross-system condition monitoring system (CMS). With a CMS the operation state of a wind turbine can be determined and supervised.

Certification

One of three research topics is the development of certification procedures for the overall system, which can be performed on the basis of test bench measurements. The aim is to provide an optional replacement of the insitu measurements that are currently destined in the IEC 61 400.

Development of two test rigs

At RWTH Aachen University two new WT system test rigs with different power categories are built up. In the project's first phase an already exisiting universal test bench is configurated for a 1 MW nacelle system test rig.

The second phase covers the entire construction of a 4 MW WT system test rig for the analysis of the dynamic operation behaviour of WT nacelles at the Center for Wind Power Drives at RWTH Aachen University