Master’s thesis in assessment of damping estimation methods for offshore wind turbines on monopile

11 Oct 2018
12 Nov 2018
Offshore, Wind
Contract Type
Full Time
Do you want to kickstart your career and turn complex challenges into innovative renewable solutions?
Write your master's thesis with us and face a wide range of complex engineering and scientific challenges. You'll get the opportunity to develop and deploy some of the world's largest renewable infrastructure assets, solving complex challenges that require innovative solutions in close cooperation with other leading specialists, leveraging each other's know-how and expertise.
Overall project description
The project will primarily be focused on evaluation of the damping estimation methods available in our LAC department. An extension of the methods may be considered upon successful completion of the primary goals of the project.
Detailed project description
The damping level of monopiles has an important impact on the structural design of turbine foundations. Therefore, accurate estimation of this parameter is of high importance to the designers to ensure safety without overdesigning the foundations. A damping estimation methodology is developed by the LAC department. Validation of the method and identification of potentials for improvement are to be done within this cooperation.
Project overview
The scope of the project is to validate and improve damping estimation methods. The project progress will be assessed on the basis of the documentation made at different stages of the project.
Technical content
  • The project may include analysis of the following:
  • literature review of methods for output-only system identification such as OMA methods
  • development of a numerical model for investigation/verification of methods
  • numerical investigation of one or more of the methods including statistical data analysis of the estimators
  • application of one or more of the methods for aeroelastic simulations
  • documentation of the investigations
  • application of methods for field measurements of mechanical vibrations of offshore WTGs
  • development of quality check procedure
  • implementation of tools for automated data analysis
  • comparison of damping levels across wind farms.
Your competences include that you
  • have knowledge of finite element analysis at theory and software level
  • have knowledge of structural dynamics and knowledge of signal processing
  • have experience in exploration of numerical models
  • have a structured and enthusiastic approach to the challenge of doing a master's thesis in an industry setting
  • speak and write English fluently.
In addition, it would be an advantage if you have specific knowledge within wind turbine behaviour and measurements methods and tools.
Functional area : WTG loads, foundations.
No. of students: One
Academic level: MSc
Working hours: 37
Project supervisor(s)/department(s)
Mahdi Teimouri Sichani, Senior Load Engineer, Loads, Aerodynamics & Control, telephone: +45 99 55 65 35
Would you like to help shape the renewable technologies of the future?
Send your application to us as soon as possible and no later than 7 January 2019, as we'll be conducting interviews on a continuous basis.
Desired start date: 4 th semester
Additional info: Y ou'll conduct your studies at our office in Gentofte
Please don't hesitate to contact windthesis@orsted.dk if you'd like to know more about the position.
Please note that for your application to be taken into account, you must submit your application via our online career pages.
About Ørsted
Headquartered in Denmark, Ørsted's 5,800 employees develop, construct and operate offshore wind farms, bioenergy plants and innovative waste-to-energy solutions and provide smart energy products to its customers. Ørsted Wind Power's 2,200 employees have developed and constructed the largest portfolio of offshore wind farms in Northern Europe, and we're expanding with international activities in the US and Asia-Pacific. For more information on Ørsted, visit orsted.com.

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