Module Number: MW2152
Duration: 1 Semester
Recurrence: Winter Semester and Summer Semester
Number of ECTS: 5
Professor in charge: Carlo L. Bottasso
Class attendance: 45
Private study: 105
Written or oral exam at the end of the lecture (100%) depending on the number of attendees.
During the lecture period optional seminar talks may be presented.
The course offers a broad introduction to the engineering principles underlying the operation of wind turbines, as well as their design. The course is organized in the following five main modules:
- Introduction: introduction to wind energy, and overview of wind energy systems and wind turbines; the wind resource and its characteristics; anatomy of a modern wind turbine; wind turbine components; electrical aspects.
- Wind turbine aerodynamics: overview of rotor aerodynamics; one-dimensional momentum theory and Betz limit; wake swirl; airfoils; blade element momentum theory, dynmaic inflow; unsteady corrections, balde tip and hub losses, dynamic stall, stall delay and three-dimensional effects; deterministic and stoachastic wind models.
- Dynamics and aeroservoelasticity: rigid and elastic flapping and lagging blade; the rotor as a filter, flutter, limit cycle oscillations, loads, stability analysis; aeroservoelastic models of wind turbines; aeroservohydroelastic models for off-shore applicants.
- Wind turbine control: overview and architecture of wind turbine control systems; on-board sensors; supervisory control; regulation strategies; trimmers, loard-reducing control, dampers; load and wind observers.
- Wind turbine design: overview of design criteria and certification guidelines; aerodynamic design; structural design; design and choice of sub-systems and components.
After successfully completing the course, students will have an understanding of the physical processes underlying the energy conversion process from wind. They will have a solid basic knowledge of wind turbine aerodynamics and structural dynamics, and they will understand the main strategies used for controlling these machines over their complete operating range. A specific goal of the course is to provide students with a multidisciplinary vision on the physics of wind energy systems, and an understanding of the methods used for their modelling and simulation. A particular emphasis will be placed on design, and on the effects of desing choices on the cost of energy.
Knowledge in engineering mechanics and aerodynamics
The follwoing kinds of media are used:
- Class room lectures
- Lecture notes (handouts)
- Exercises with solutions as download
T. Burton, N. Jenkins, D. Sharpe, E. Bossanyi, Wind Energy Handbook, Wien 2011.
J. F. Manwell, J. G. McGowan, A. L. Rogers, Wind Energy Explained, Theory, Design and Application, Wiley, 2012.
In addition to the individual methods of the students consolidated knowledge is aspired by repeated lessons in exercises and tutorials.
During the lecture students are instructed in a teacher-centered style. The exercises are held in a student-centered way.