Master's project - Multi Rotor Control


Companies / Organizations


Greater Copenhagen area

This project is intended as a Master's project for students with a background in control, sensing or mathematical modelling.

As part of the project it is encouraged for the student to spend 1-2 weeks at Vestas R&D headquarters in Aarhus.


All commercially successful wind turbines have been horizontal axis single rotor turbines (SRT) with one rotor and nacelle placed on top of a tower. The future

challenges in extending the conventional SRT concept to achieve higher ratings are considerable. The weight increases by the cube of the rotor radius while the power increases with the square - this means that material cost increases faster than power gained. An alternative to SRT is a multi-rotor turbine (MRT) i.e. one with more rotors on the same support structure (tower).

As a results quadrupling the power output of a SRT can be achieved with an eightfold increase in cost whereas a 4 rotor MRT only would quadruple the rotor cost yielding the same power increase. However, for a MRT the support structure cost increases and the challenge is to design load relieving control which can reduce the vibrations of the support structure with little impact on produced power.


Based on the benchmark defined in [1] create a control strategy and demonstrate that it can decrease support structure loads (vibrations) of a multi-rotor turbine with little to no impact on produced power. The solution should be based on standard available sensors and coordination between the individual nacelles. It is encouraged to test out state of the art control technologies


Master's student with focus on control, sensing or mathematical modelling

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Technical University of Denmark

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