Research

 Cross Section

 Education

 Internship Office

 Fastlinks


 

Research Group Control, Optimization and Monitoring

This working group focuses on the improvement of wind turbines’ operation with new control strategies, monitoring and structural optimization. In the area of load monitoring is examined how neural networks help to detect loads on the structure of wind turbines. After a training phase with load and SCADA signals neural networks are able to provide reliable values even after the failure of the load measurements. This allows adjusting the operating and servicing strategy. In the field of control robust and predictive control strategies are designed and tested to reduce the operational loads and increase the energy efficiency. The emphasis is on the use of LIDAR measurements for feedforward control of the collective pitch angle. This was successfully tested worldwide for the first time with the LIDAR system developed at SWE along with the U.S. research institute NREL.

Together with the group “Conceptual Design and System Simulation” reduced nonlinear models for floating wind turbines are being developed which can be used in model-based predictive controllers, but also for structural optimization of the floating wind turbines themselves

 


 

Team

Holger Fürst
Tim Hagemann
Florian Haizmann
Frank Lemmer

Vasilis Pettas
Steffen Raach
Mohammad Salari Khaniki
David Schlipf (team leader)
Wei (Viola) Yu

Research Projects

TELWIND Integrated telescopic tower and evolved spar floating substructure for low-cost deep offshore wind and next generation of 10mw+ turbines


Content

  • Design a 5MW WTG from conceptual to detail constructive engineering.
  • Study the concept scalability for a 12 MW WTG.
  • Build a fully coupled aero-hydro-servo-elastic Floating Wind Turbine model and investigate coupling effects in the overall wind turbine performance
  • Model Basin Tests in operating, extreme and installation conditions
  • Perform laboratory tests to study the performance of the suspension tendons
  • CapEx and OpEx estimate.
  • Viability analysis of a single installation and integration in a multi-megawatt floating wind farm

Coordination

ESTEYCO SAP

SWE-
contribution

  •  Control Design for the Floating Wind Turbine

Partners

  • ESTEYCO
  • ALE
  • Mecal WTD
  • UC-ICH
  • CEDEX
  • COBRA
  • DYWIDAG
  • TUM

Funding

 

This project has received funding from the European Union’s Horizon 2020 research and innovation programme.

Duration

2015-2018

Contact

Wei Yu, David Schlipf


CL-Windcon - Closed-loop wind farm control

Content

  1. Development of control-oriented wind farm models
  2. Feedforward-control algorithms on the wind farm level
  3. Feedback-control algorithms for wind farm control

Coordination

CENER, Spain

Partners

General Electric, Ramboll, University of Stuttgart, Technical University of Munich, UL International GmbH DEWI (Germany)

Enel Green Power, Politecnico di Milano (Italy)

Aalborg University (Denmark)

Delft University of Technology, Energy Research Center-ECN (The Netherlands)

Garrad Hassan (United Kingdom)

Ikerlan-IK4, Qi Europe, CENER (Spain)

Funding

 

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 727477

Duration

November 2016 bis Oktober 2019

Contact

Steffen Raach

ANWIND - Application-oriented research and measurement of windfields
for wind turbines


Content

  1. Creating new knowledge about windfields and their characteristics
  2. Development of new measurement devices and testing of new measurement techniques for sensing the windfield in front of and at the wind turbine
  3. Analysing the influence of the wind field on the operation of the turbine through measurement campaigns on- and offshore
  4. Testing of new control strategies using the new knowledge about wind fields and the newly developed measurement devices

Coordination

University of Stuttgart, SWE

Partners

Senvion GmbH

Funding

Duration

Januar 2016 bis Dezember 2018

Contact

Florian Haizmann

LIDAR II – Further development of LIDAR wind measuring techniques for offshore application


Content

  1. Development/Proving of a robust nacelle based LIDAR system
  2. Proving LIDAR assisted control
  3. Load characteristics and monitoring for inhomogenios inflow

SWE-contribution

  • Stationary load estimation and power curve assesment with nacelle based LIDAR
  • Analysis incoming wind fields
  • Predictive control with nacelle based LIDAR for gust compensation and energy optimization

Partners

  • University of Stuttgart: Stuttgart Chair of Wind Energy,
  • ForWind – Universität Oldenburg
  • Deutsches Windenergie Institut GmbH (DEWI)
  • Fördergesellschaft Windenergie e.V. (FGW)
  • AREVA Wind GmbH

Funding

BMWi

Duration

November 2010 - October 2014

Contact

Steffen Raach

 

AFOSP - Alternative Floating Off-Shore Platforms


Content

Design and test possible floating platforms designs based on other materials that offer the potential to reduce costs

SWE-contribution

  • Uncoupled pre-design studies with reduced models and dedicated hydrodynamic boundary element codes
  • Coupled aero-hydro modelling of the platform and turbine to obtain dynamic forces on the floating platform and the vibrations and movements, to check if they are acceptable.
  • Controller design for the new design

Coordination

Gas Natural S.D.G, S.A.

Partners

  • University of Stuttgart – SWE
  • KIC InnoEnergy SE
  • Gas Natural S.D.G, S.A.,
  • Universitat Politècnica de Catalunya

Funding

European Union – EIT KIC Inno Energy

Duration

July 2012 – July 2014

Contact

Frank Lemmer

 

FLOATGEN (DEMONSTRATION OF TWO FLOATING WIND TURBINE SYSTEMS
FOR POWER GENERATION IN MEDITERRANEAN DEEP WATERS)Image


Content

  1. demonstrate the technical and economic feasibility of two different multi-megawatt integrated floating-wind turbine systems in deep watersdemonstrate decrease of costs for electricity generation down to competitive level
  2. assess, compare and obtain conclusions about performance of such two different combinations of wind turbine and floating structure technologies to get the knowledge to improve performance of the future replication projects of these technologies

SWE-contribution

  • aero-servo-hydro-elastic simulation and loads analysis of the GAMESA 2MW floating offshore wind turbine
  • support in controller design
  • validation of simulation tools with full-scale experimental data

Coordination

GAMESA

Partners

  • GAMESA
  • IDEOL
  • University of Stuttgart
  • Acciona Windpower
  • Navantia
  • Olav Olsen
  • Fraunhofer IWES
  • RSK ENVIRONMENT
  • Greenovate! Europe
  • Acciona Energy

Funding

European Union – FP7

Duration

February 2013 – February 2017

Contact

Friedemann Borisade née Beyer

 

INNWIND.EU - INNOVATIVE WIND CONVERSION SYSTEMS (10-20MW) FOR OFFSHORE APPLICATIONS


Content

  1. high performance innovative design of a beyond-state-of-the-art 10-20MW offshore wind turbine and hardware demonstrators of some of the critical components.
  2. a light weight rotor having a combination of adaptive characteristics from passive built-in geometrical and structural couplings and active distributed smart sensing and control
  3. an innovative, low-weight, direct drive generator
  4. a standard mass-produced integrated tower and substructure that simplifies and unifies turbine structural dynamic characteristics at different water depths

SWE-contribution

  • aero-servo-hydro-elastic simulation and loads analysis of the GAMESA 2MW floating offshore wind turbine
  • support in controller design
  • validation of simulation tools with full-scale experimental data

Coordination

DTU

Partners

  • DTU
  • Aalborg University
  • CRES
  • ECN
  • NTUA
  • TUD
  • Sintef
  • Polytecnico di Milano
  • University of Hannover
  • University of Oldenburg
  • University of Patras
  • University of Sheffield
  • University of Strathclyde
  • University of Stuttgart
  • WMC
  • Fraunhofer
  • Fundacion CENER-CIEMAT
  • University of Bristol
  • DHI
  • Rambøll
  • Siemens
  • GL
  • GL-GH
  • Magnomatics
  • Suzlon
  • Gamesa
  • EWEA

Funding

European Union – FP7

Duration

2012 - 2017

Contact

Frank Sandner