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November 2016

New wind farm control research project

University of Stuttgart is part of the new European H2020 wind farm control project CL-Windcon which will address the new generation in wind farm control.
14 partners from 6 countries are participating in the project and are developing advanced feedforward and feedback control algorithms for wind farm control improve the wind farm performance.

CL-Windcon kick-off meeting press release...

October 2016

Excellent Young Wind Doctor Award for David Schlipf

Every year the Excellent Young Wind Doctor Award is bestowed on an outstanding PHD within wind energy research. The Excellent Young Wind Doctor Award is adjudicated by a Committee led by Professor Gerard van Bussel, TU Delft, Netherlands. This year our colleague David Schlipf won with his thesis "Lidar-Assisted Control Concepts for Wind Turbines"

Congratulations David!

 

June 2016

Putting a New Spin on Lidar Mount for Better Wake Monitoring

Researchers at the National Wind Technology Center (NWTC) at the National Renewable Energy Laboratory (NREL) are collaborating with the University of Stuttgart, Delft University of Technology, and the University of Colorado at Boulder on a project that uses lidar technology to “see” the wake of one turbine and how it affects other turbines.
The Full-Scale Wake Steering Project features a Stuttgart-designed scanning lidar mounted to the U.S. Department of Energy (DOE) GE 1.5-megawatt (MW) wind turbine located at the NWTC. Unlike previous lidar installations, however, this lidar mount (designed by NWTC engineers) is motorized to pivot independently from the turbine, enabling researchers to measure the entire turbine wake—even in cases where the turbine has yawed. The results are then modeled in NREL’s Simulator fOr Wind Farm Applications (SOWFA).
Each project partner brings its own unique capability to the project. NREL has the DOE GE 1.5-MW wind turbine, SOWFA, and expertise with implementing, analyzing, and designing wind farm control strategies. The University of Stuttgart provided the lidar device and supports the project through their lidar-based control expertise. Additionally, Steffen Raach of Stuttgart worked for 3 weeks at the NWTC to support the calibration and installation of the lidar following shipment. Delft University of Technology brought to the partnership models, data, and expertise in dynamic models and control to help NREL model the dynamic behavior of wakes. And, during the project’s analysis phase, the University of Colorado will join in interpreting the data.
“Wind farm control is garnering interest across the industry now, and field tests provide an important development in maturing the technology.  However, field tests of wind farm control strategies are challenging.  In the past, you could evaluate individual wind turbine controls by installing them on one turbine and comparing its performance with other nearby turbines,” Fleming said. “This is more challenging with wind farm control. For one organization to have everything from expertise in high-fidelity modeling to controls and test equipment such as a turbine and lidar is a tall order, so there are lots of reasons to collaborate on this work. Everything we learn from these big collaborative projects is beneficial to every partner.”

Engineers mount a lidar system supplied by the University of Stuttgart on top of the U.S. Department of Energy GE 1.5-megawatt wind turbine as part of the collaborative Full-Scale Wake Steering Project. Photo by Dennis Schroeder, NREL
Mai 2016

Doctoral College Windy Cities

In scope of the “energy transition” a promising field of high socio-economic relevance and visibility will be processed in this new doctoral college. The cooperative graduate program “Windy Cities” focuses on investigations of the economic use of small wind turbines for local distributed power generation in urban areas. The interdisciplinary approach here includes projects for simulation and visualization, development of new energy storage technologies, testing of prototypes in wind turbines up to an intelligent load management.

The doctoral program is funded through the Landesgraduiertenstiftung of the Ministry of Science, Research and Arts of Baden-Württemberg and includes 12 PhD projects that are awarded in the form of scholarships. Application deadline is June 30th. SWE is represented with one PHD project.

For more information click here:www.windycities.de

April 2016

Throughout April 2016 a consortium of SWE, DTU (Denmark), CENER (Spain) tests successfully a scaled model of a floating wind turbine with variable speed-blade pitch control in the combined wind-and-wave basin by DHI in Denmark. A group of five students and six staff members of DTU and SWE prepared the tests, erecting also a 4x4m wind generator in the DHI basin. The platform, built by SWE, will be further tested until end of April 2016 with a wind turbine model developed by DTU and a controller designed and implemented by SWE.

October 27th, 2015

Prof. Po Wen Chen writes a blog article about

The Challenges of wind energy in a sustainable energy system

(Only available in German)

 October 21st, 2015

 New Streamline XR lidar installed on radio tower

The new Streamline XR lidar was installed on the Lauterstein radio tower next to the SWE met mast on the Swabian Alb. Up there, the device is able to measure the wind speed in a distance of 10km in order to be able to nowcast the wind speed in a time range up to 60min. This work is carried out within the VORKAST project.

September 2015

The future of wind energy was the main focus of the PhD Seminar of the European Academy of Wind Energy (EAWE) where more than 110 postgraduates from all over Europe met at the University of Stuttgart from September 23-25.

Professor Alfred Kleusberg, former Vice Rector for Teaching and Education, welcomed the participants. In his speech, Kleusberg referred to the long tradition of wind energy research at the University of Stuttgart. The establishing of the Endowed Chair of Wind Energy in 2004 continues this tradition (since 2010 Stuttgart Wind Energy (SWE) under the lead of Prof. Dr. Po Wen Cheng).

The PhD Seminar offers a platform for young scientists where they can present their own research activities and maintain professional exchange. They can also benefit from the experience of renowned experts and pioneers of wind energy. New concepts in wind energy, measurement of wind velocity in front of a wind energy plant by means of Lidar technology, control technology for wind energy plants and wind parks, as well as the optimization of energy yield were the key issues of the PhD Seminar.

Keynote lectures by prominent representatives from science and industry brought the postgraduates in contact with further issues of wind energy. Examples of this are the influence of renewable energies on the electricity market, the importance of acceptance at the project planning stage and the role of innovations for the reduction of energy generation costs. Special highlights were the presentations by Bonnie Ram (DTU Wind Energy Department, Denmark) and Henrik Stiesdal, former technical manager at Siemens Wind Power and a pioneer of the modern wind energy industry.

One of the PhD Seminar’s traditions is the award of the best doctoral thesis in wind energy. This year Emmanuel Branlard of DTU in Denmark was honored for his contribution to the further development of Vortex methods.
The PhD Seminar was sponsored by the Karl Schlecht Foundation, EAWE, GE and Enercon.
 

March 31st, 2015

NEPTUNE project ends- Lidar buoy EOLOS deployed

The KIC Inno Energy project Neptune, which was carried out in cooperation with several Spanish partners such as IREC, GNF, and UPC, came to a successful end this March.

The aim of the project was to develop a lidar buoy, which is able to measure meteorological and oceanographic data at offshore locations in deep water. This aim has been reached! The EOLOS buoy is now being tested at the ECN met mast IJmuiden 75km off the coast of the Netherlands.

More information can be found in the press release of the test.

February 25th, 2015

Wind Energy Project Successfully Completed

A team of students has built a wind turbine of 2 m in rotor diameter at the SWE and successfully tested the turbine in the wind tunnel under the subject “Aero-servo-elastic optimisation of a small wind turbine” within the frame of the wind energy project. For the first time a low-noise direct-drive concept with a compact design has been realised, including the implementation and testing of a grid connection by means of an inverter. Additionally, the aerodynamic quality of the rotor blades was further increased and an innovative wireless data acquisition system was used for the analysis of strain gauge measurements.
The wind energy project is annual course in the winter semester. Its main focus is the practical application of the knowledge gained in the wind energy lectures.

A video of the tests can be seen under the link: http://youtu.be/Ka_P7ezDduQ 

More information:
Friedemann Beyer, Universität Stuttgart, Stuttgart Wind Energy (SWE), Tel. +49 711 685-60338, E-Mail: beyer (at) ifb.uni-stuttgart.de

February 9th, 2015

Wave-Tank Tests of a Floating Wind Turbine Model Within the EU-Funded Project INNWIND.EU continued.

After the first tests from September 2014, Stuttgart Wind Energy (SWE) has again tested a model of the so-called semi-submersible floating platform for wind turbines together with the project partners of INNWIND.EU. A new Hardware-In-The-Loop approach was developed by partner CENER (Centro Nacional de Energías Renovables) and additional tests with the rotor built by Politecnico Milano were performed. The test results are now being analyzed by more than six European research institutes in order to improve the software simulating the complex system behavior of floating wind turbines. The project aims at advancing the new floating wind power technology, of which a full-scale prototype will be built soon on the Scottish coast.

Video-Link: https://www.youtube.com/watch?v=jlA2eNhmc9c
Video: Florian Amann
November 2015
LUI: Ludwigsburg intermodal. Development oft the train station in Ludwigsburg to an intermodal mobility hub as part of the plan to create a "comfortable station"

Within the development proposal „rebuilding the train station of Ludwigsburg to a comfortable station“ the Institute for Urban Development applied for the project „LUI Ludwigsburg intermodal“. The project „LUI“ is part of  „Schaufenster Elektromobilität“ [showcase electro mobility] and will be connected to “LivingLab BWe mobil” with other projects in the region.

Besides potential locations for charging stations, the expansion of renewable energies in the periphery of the station will be verified to guarantee a zero-carbon energy supply for alternative mobility concepts. A climate protection concept still to be designed will consider the installation of renewable energies.

SWE is responsible for the measuring and analysis of the wind potential at the station in Ludwigsburg

Source (in german, shortened): institute for urban development

 
October 3rd, 2014

First Series of Wave-Tank Tests of a Floating Wind Turbine Model Within the EU-Funded Project INNWIND.EU Successfully Completed

At SWE a so-called semi-submersible floating platform has been built starting at the beginning of this year. It was successfully tested during September, 22nd until October, 3rd at the „LHEEA - Research Laboratory in Hydrodynamics, Energetics and Atmospheric Environment“ in Nantes/France. After assembling the platform model with a scaled wind turbine model (1:45), built by the Italian university Politecnico di Milano, combined wind-and-wave tests under realistic operational and extreme conditions were conducted. The first floating offshore model built at the University of Stuttgart proved to perform as expected including the sensors and the newly designed wireless data acquisition system. Later this month the tests will be continued with a ducted fan at the tower top, which imitates the aerodynamic thrust forces.

For more details, see the video of the tests.

October 1st, 2014

In October there is a bit of change in our team. David Schlipf, the team leader of the control group, starts his work as a guest scientist in Boulder, Colorado, USA. He will work for almost a year in collaboration with CU and NREL. During this time, Florian Haizmann will be his substitue as team leader at SWE.

In addition to that we have a new team member: Holger Fürst starts his work in the control, optimization and monitoring group. Holger will do his phd in the area of predictive turbine control. Welcome Holger!

September 1st, 2014

New research project at the SWE

The new Project VORKAST is accepted and starts immediately. It is funded by the Federal Ministry for Economic Affairs and Energy and the aim is to predict wind and solar power in a time range up to 60 min in order to optimize a mix of energy scources. The project will be carried out in close collaboration with the Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW) and will last until the beginning of 2017. During this time the SWE will carry out ultra long range lidar measurements in order to nowcast wind power and ZSW will simultaneously predict the solar irradicance by means of a fish eye cloud camera.

July 24th, 2014

Wind energy Quo vadis? - anniversary celebration of the SWE

In celebration of the ten year anniversary of our chair, a wind energy symposium was held at the new Space Center on July 24th. During the afternoon several guest speeches were given with various current topics concerning wind energy. Among these topics were the grid integration of renewable energies, the prospects of offshore wind energy and also the social acceptance of wind turbines and landscape aesthetics. Invited were numerous representatives from research, industry and politics.

For more information see an article in the Stuttgarter Zeitung. According to the wishes of many, we also provide the presentations for download.

Prof Dr.-Ing. S. Schöbel, Chair of Landscape Architecture, TU Munich

Occasion for talks during the break and after the symposium

 June 2014

Our new Spidar Lidar from Pentalum in being tested at the 200m met mast of the KIT

 March 5th, 2014



Print Your Own Wind Turbine

A team of students has built a wind turbine with 2m in rotor diameter and successfully tested the device in the gust wind tunnel of the Institute of Aerodynamics and Gas Dynamics (IAG) during the wind energy project at SWE. The 3D printing technology has been used for an innovative design and construction of the rotor blades, hub and nacelle according to the theme “Print Your Own Wind Turbine”. Carbon fiber was applied for reinforcement of the structure. Thus, a high aerodynamic quality and structural strength of the rotor blades could be achieved. The design and construction process will be optimized in ongoing research activities at SWE.

The wind energy project is offered annually in the winter semester. Its main focus is on the practical application of the knowledge gained in the wind energy courses.

More information:
Friedemann Beyer, University of Stuttgart, Stuttgart Wind Energy (SWE), Tel. +49 711 685-60338, E-Mail: beyer (at) ifb.uni-stuttgart.de

February 11th - 13th, 2014


This past February students from the University were able to participate in the annual industry excursion offered by SWE. The aim of this excursion is to introduce the students to different topics and companies that are involved in energy production within the main theme of wind energy. As part of the three day excursion the students were able to visit manufactures of wind drive components including Voith and VEM Sachsenwerk, the pumped hydro storage facility in Goldisthal, a wind park in Klettwitz, as well as Germany´s biggest turbine manufacturer Enercon. Highlights of the excursion include a guided tour through the underground machine house of the pump hydro power station and seeing the new E-126 / 7,58MW turbine from Enercon.
 
January 28th, 2014

WindForS Research Cluster Establishes Office and Launches Further Research Project

Use of wind energy at challenging sites such as the mountainous regions of southern Germany is at the heart of WindForS, the wind energy research cluster in southern Germany. For a period of three years, the Baden-Württemberg Ministry for Science, Research and the Arts is providing the funds for a WindFors office at the University of Stuttgart. The initial funding is meant to help professionalise the cluster’s activities and enable its members to start work on the proposed goals. The WindForS office will be the first point of contact for the proposed test field in southern Germany and will press ahead with its realisation

The office will be lead by Andreas Rettenmeier from SWE who up to now held the position of  team leader of the test and measurement group. The new team leader will be Ines Würth.

More information you can find in the press release.

December 2013

December, 19th, 2013

Professor Dr. Krish P. Thiagarajan from the University of Maine, USA, is visiting the SWE. Professor Thiagarajan is Professor of Mechanical Engineering and presents his very interesting research work concerning floating offshore structures.

Thank you very much for your visit!

November 19th - 21st, 2013

In partnership with the National Renewable Energy Laboratory (NREL) and the Endowed Chair of Wind Energy (SWE) at the University of Stuttgart, and with support by EWEA two side events are presented at the EWEA Offshore Conference in Frankfurt from November 19-21. On November 19th the 8th and final meeting of the IEC Wind Task 30 Offshore Code Comparison Collaborative Continuation (OC4) Project takes place and on November 20th a workshop on the FAST wind turbine computer-aided engineering (CAE) software tool developed by NREL will be held. Additional information on registration and agenda can be found on the EWEA website and on request (contact person Denis Matha)

November 12th-13th 2013

In partnership with the Spanish institute CENER, SWE has organized a topical expert meeting about "wind energy in complex terrain" within the IEA "Wind Task 11". At the meeting 25 representatives from industry and science participated and they flew in from all over the world (e.g. USA, Japan, Canada). Apart from SWE, several other institutes from the southern German wind energy research network WindForS presented their work concerning the topic. The participants exchanged information, recent results and defined topics of development needs for the usage of wind energy in complex terrain.

October 2013

The OWEA loads project is now underway at SWE. This research is part of the RAVE (Research at Alpha Ventus) project ´Probabilistic description, monitoring and reduction of loads of future offshore wind turbines` and it is funded by the Federal Ministry for the Environment, Nature Conservation and Reactor Safety (BMU).
The SWE Group has partnered with turbine manufacturer REpower and Areva, as well as the wind group at the University of Oldenburg with the objective to analyze the loading on the 5MW turbines at the wind farm and help develop the future generation of 10MW turbines.
The project analyses data from the strain and accelerometer sensors mounted on the test turbines, as well as data gathered from the nearby Fino1 meteorological station. Current research involves extrapolation of fatigue and extreme loading on the turbines as well as verification and validation of software for the modeling of the offshore environment.

September 23rd, 2013

Our former colleague Dr. Tim Fischer, who is now vice director of Ramboll Wind, won the RWE future prize for is dissertation about "Mitigation of Aerodynamic and Hydrodynamic Induced Loads of Offshore Wind Turbines" which he wrote at the SWE. His work was chosen among 70 applicants by an independent jury and after a presentation he was elected on the first place.

Congratulations Tim!

September 20th, 2013

MaRINET(EU-FP-7) initiative opens access for the last time to European marine renewable energy testing sites

MARINETs Transnational Access initiative offers Free-of-Charge access to EC-funded Test Facilities. The network comprises 45 testing facilities at 29 research centres in 12 countries. Since MARINET was launched in 2011 it has spent 68% of the Transnational Access budget to facilitate marine renewable device research at 32 different facilities.

More Information: http://www.uni-stuttgart.de/windenergie/marinet

September 2nd, 2013
 

In cooperation with the turbine manufacturer KENERSYS, the SWE performed the first lidar assisted control testing on a commercial wind turbine. The SWE scanning lidar system has been installed on the nacelle of a K110 KENERSYS wind turbine (110 m rotor diameter, 2.4 MW rated power) and the SWE collective pitch feed forward controller was integrated into the control system.

Initial results show positive effects: as intended, the implemented controller reduced both, the variation in the generator speed as well as the pitch activity at rated power. Further steps of the campaign involve an optimization of the controller and an analysis of the structural loads.
 

August 2013
 

From August 19th to the 25th the Aeolos-Race, the world championship for ventomobiles, took place in the Dutch city Den Helder. The students from team InVentus of the University of Stuttgart came in second and were very happy about their achievement. This year twelve wind driven vehicles from five different countries participated at the race.

Two years of construction and development payed off for the studens from Stuttgart. In a thrilling head to head race with the team Chinook from Canada and Broers from the Netherlands, they won the silver medal.
www.facebook.com/InVentus

June 30 - July 5 2013
A delegation of six SWE researchers attends the 23rd International Offshore and Polar Engineering (ISOPE) Conference in Anchorage, Alaska, USA where they present the results of their work.
December 2012
October 2012
The BMU has approved the research project "Lidar Complex" on 1 October 2012. It has a term of three years and is engaged in the development of lidar technologies to detect wind field structures in terms of optimizing the use of wind energy in the mountainous, complex terrain It will be implemented in addition to lidar systems, two different airborne systems. This is the helicopter AMPAIR the Institute of Aircraft Design at Stuttgart University and an aircraft of the Center for Applied Geosciences, University of Tübingen. The Institute of Aerodynamics and Gas Dynamics studied using CFD simulations, the flow structure of the complex terrain.
1 October 2012
New team member: Florian Haizmann starts working at the SWE in the field of Lidar assisted predicive cotrol.
30 August 2012
The SWE long-range Lidar has been successfully installed on the substation of the offshore wind park "Baltic-I". In the next 12 months measurements will be done covering the whole wind park area with 21 wind turbines. The measurements aim to get more information about the flow within the park in front and behind of certain turbines.
 
http://www.ifb.uni-stuttgart.de/ifbmedia/bilder/05_Forschung/04_Windenergie/lidar/swe_lidar_galion_offshore_2.jpg
20 June 2012
The new long range Lidar was successfully commissioned at the Schnittlingen test site (Swabian Alb). In the coming weeks preparatory tests and comparative measurements against the SWE met mast shall be performed. The lessons learned will be helpful in the measurement campaign at the offshore wind farm Baltic-I, starting end of August.
 
 
11-15 June, 2012
This year's "Summer School in Remote Sensing for Wind Energy" took place year in Boulder, Colorado. As in 2011 (Risø DTU, Denmark) David Schlipf and Andreas Rettenmeier were invited as guest lecturers. In their lectures on "Lidar for wind turbine control" and "Nacelle-based lidar systems," David and Andreas presented the work of the Stuttgart Lidar group to participants from other universities, research institutions and industry.
May 2012
First LIDAR feed-forward controller field tests successfully demonstrated! We have succeeded for the first time worldwide using a nacelle-based lidar system and predictive control methods to lower the loads acting on the turbine. We were supported by our colleagues from the "National Renewable Energy Laboratory" (NREL) in Boulder, USA
1st April 2012
New team member: Ines Würth starts working at the SWE in the field of nacelle-based Lidar power curve determination.
27th February 2012
The SWE's LiDAR Scanner is installed on CART2 near NREL, Colorade, USA.
 
 
February 2012
In February 2012 a joint campaign with the US-American research institute NREL started to initiate the world's first testing of LiDAR-based control. For this purpose two units each equipped with a LiDAR system are available. On CART3 (3 rotor blades) a commercial device is employed and on CART2 (2 rotor blades) the SWE's LiDAR system is tested.
January 2012
The SWE's LiDAR Scanner returns from Denmark; the preparations for the upcoming campaign in the USA start immediately. This includes real-time data link amongst other things.
15. April 2011
Beginning of the joint measurement campaign of the SWE with the department "Test & Measurement" at the Danish Research Centre Risø DTU. Initially ground-based measurements are planned, pointing diagonally towards a met mast. In addition measurements from the rear of the wind turbine "Nordtank" are to follow. The turbine serves as a platform that enables "shooting" horizontally at other met masts and comparison measurements regarding wind speed and turbulence. At the respective wind conditions the turbine is put into operation and the Nordtank-turbine's wake wind field is surveyed. At wind from southerly directions it is even possible to record the two overlapping wakes of the turbines "Nordtank" and "Tellus".
 
 
28. March 2011
Beginning of the measurement campaign with DEWI and Germanische Lloyd-Garrad Hassan at the German offshore test site "alpha ventus" using the two new scanners.
 
 
 
17th +18. October 2010
Results of measurement campaigns will be presented at the DEWEK.
13. October 2009
The LiDAR unit including scanner was rotated by 180 ° and "looks" now in the inflow of the M5000.
18. May 2009
The LIDAR system is mounted on the nacelle and aligned. The first measuring campaign is occupied with the wake of the Multi MW wind turbine.
 
17. May 2009
The Windcube is prepared for the nacelle measurement campaign, the measurement and the orientation of the Laserbeam is tested at night.
15. May 2009
The construction of the LiDAR-mount, tower and bracing, is mounted on the Multibrid M5000. Now all we need
is the LiDAR equipment.
Spring 2009
The development of the scanner proceeds. The tests were successfully completed on SWE.
 
Fall 2008
In the course of the Federal Ministry of Environment-funded research project "LiDAR", a scanner is to be developed which allows the nacelle-based use of the LiDAR device. In this way the wind field can be observed and analyzed either in front or behind the turbine covering the entire swept rotor area at various distances from the nacelle. The information about the approaching wind field for example is used for the development of predictive control strategies or future performance and load measurements. By observing a wind turbine's wake an estimation of the loads on neighboring wind turbines within a wind farm can be done.