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

Observer-Based condition monitoring system (BCMS)

Within this project, a novel and integrated state-acquisition and prediction system for main gears of wind turbines will be developed. Thereby, the information accuracy and volume of CMS in main gears of wind turbines should be increased and automated, and reliable damage notifications be enabled.

The BCMS that will be developed represents a combination of a model-based observer and a load-oriented sensor technology. The model will deduce parameters that are hard to measure from the attained process parameters.

WEA-GLiTS

The objective of this research project is to develop a material concept for journal bearings for the use as main bearings in wind turbine generators (WTG). Moreover, in cooperation with research institutes and industry partners the project deliverables will show that layers of hybrid matrix materials, coated by thermal spraying, are suited in particular for large journal bearings.

Technology Based Energy System Analysis (TESYS)

The RWTH and the Forschungszentrum Jülich have a unique technical expertise at solving different energy system related subproblems at their disposal. In order to pool and join the individual competences in one comprehensive energy system model 19 project partners created the interdisciplinary research project‚ ‘Technology Based Energy System Analyis (TESYS)‘. Beyond connecting technical expertise furthermore econmical and social aspects are integrated.

Loads on drive train components of wind turbine generators

The objective of this project is to analyze and reduce local stresses in the electro-mechanical drivetrain of wind turbine generators. The applicants strongly believe that adequately validated and thus reliable simulation models are the essential key to avoid design-related claims and to increase the availability and cost effectiveness of wind turbine generators.

Communal Energy Supply Systems (KESS)

In the interdisciplinary project KESS, technologies and concepts for flexible power production, distribu-tion and storage in interconnected, peripheral systems are investigated. The project’s objective is to provide an energy supply system, which is adapted to local circumstances, such that local energy needs and regionally available sources of energy can be integrated.

Project ISO.Wind (Integrated structure monitoring for onshore wind parks)

During the research project, the Center for Wind Power Drives will create a multibody simulation model of the wind turbine. Based on the simulation results the requirements and specifications of the SHM System can be defined. Additionally, scalable damage models will be built, to investigate the effect of damages of single parts on the vibration behavior of the outer structure of the whole wind turbine.

Torque Measurement in the MNm range

The overall aim of this project is to provide traceability for torque measurements in the MNm range for nacelle test benches. Such a development will support the wind energy industry by significantly improving testing conditions. Within the framework of this project, existing nacelle test benches will be reviewed, multi-component effects of superimposed forces and bending moments will be investigated and novel traceable calibration methods will be developed.