PhD Summer School in Control of floating wind turbines 2023
Floating wind turbines may experience instability when operating above rated wind speed, due to the blade pitch controller. This phenomenon, also known as negative aerodynamic damping, is the reason why a wind turbine controller needs to be re-designed for floating wind applications.
But how to pick the best controller settings? The choice of controller parameters has an impact on loads, power production, and stability of floating wind turbines. The first step to tuning a controller is to understand the physics involved.
DTU Wind and Energy Systems organizes PhD Summer and Winter Schools to dive into this problem. Alan Wai Hou Lio (Researcher in wind turbine control), Sithik Aliyar (Postdoc in floating wind turbines) and Henrik Bredmose (Professor in floating wind turbines) prepared a 1-week course which includes an intro to the dynamics of floating wind turbines, an overview of wind turbine control, the famous floater pitch instability, and how to fix it. There will be a combination of lectures and hands-on exercises, where participants will set up a numerical model to investigate the interaction of the
floater dynamics with the controller. The hands-on exercises have been designed for MATLAB, therefore we recommend that the participants use MATLAB as well. The course is intended for PhD students and industrial participants with some knowledge on wind turbine response and operation.
This PhD School is part of the Nordic Offshore Wind R&I Centre (NOWRIC).
| Monday 26 June |
Tuesday |
Wednesday 28 June |
Thursday 29 June |
Friday 30 June |
|
- Intro to floating wind turbines |
- Intro to wind turbine control - Generator torque controller - Blade pitch controller - Gain Scheduling |
- Stability analysis - Interaction between floater and conrtroller - Floater pitch instability |
- Avoiding the floater pitch instability - De-tuning method - Tower-top velocity feedback loop |
- Industrial guest lecture - Finish model and prepare presentation |
| Lunch | Lunch | Lunch | Lunch | Lunch |
|
- Build 6 DoF response model in MATLAB and calculate response to waves - Ice-breaking reception |
- Build 1 DoF blade pitch controller model and test for step wind |
- Build 7 DoF coupled model and trigger instability - Social activity and dinner |
- Finish the 7 DoF coupled model - Modify your controller to avoid the floater pitch instability |
- Group presentation - Feedback session with coffee and cake |
Practical information:
When: 26-30 June 2023, 9 am to 4 pm (except from Monday: we start from 10 am and finish at 4 pm)
Location: Technical University of Denmark, Risø campus, Frederiksborgvej 399, 4000 Roskilde, Denmark
Fee: 250 € for PhD students, 2000 € for non-PhD students. The fee covers lunch , coffee and tea during breaks, an icebreaker reception on Monday evening and dinner on Wednesday evening
Points: 2.5 ECTS
Please register here before 16 June
For more information please contact: courses@windenergy.dtu.dk