Introduction
The
course aims to provide a general overview on wind power plants and, more specifically, on
the wind turbines. It will introduce the principles of operation and will
provide the tools, mostly theoretical, necessary to design the power plant. The normative and economic aspects of the manufacturing and operation of the wind turbine will also be discussed.
Program
• Introduction to the course: wind energy systems; the wind turbine; the main components of a wind turbine; HAWT and VAWT; definition and meaning of the power coefficient.
• Principles of aerodynamics: definition of aerodynamic forces and moments; Buckingham's theorem; aerodynamic force coefficients; Reynolds and Mach number; airfoils; lift, drag, aerodynamic moment; 3D aerodynamics.
• Rotor aerodynamics: one-dimensional momentum theory, Betz limit, wake rotation, blade element momentum theory, blade shape for ideal rotor, aerodynamic of VAWT.
• Wind: definition; measurements; averages; turbulence; probability and mathematical models.
• Wind turbine control: motivation and classification of control systems; active and passive controls; yaw control.
• Elements of structural calculation: loads acting on a wind turbine; eigenfrequencies and modes of vibration; Campbell diagram; design of a wind turbine blade.
Basic
books
• Rodolfo Pallabazzer , “Sistemi Eolici”, Ed. Rubettino, 2004 ISBN
978-8849810677
or
• Rodolfo Pallabazzer , “Sistemi di Conversione Eolica”, Ed. Hoepli, 2011 ISBN
978-8820347864
Detailed books
• Martin O. L. Hansen, “Aerodynamics of Wind Turbines” , Earthscan Publications
Ltd., January 2001, ISBN 978-1902916064.
• J. F. Manwell, J. G. McGowan, A. L. Rogers,
“Wind Energy Explained: Theory, Design and Application”, John Wiley
& Sons, Ltd, April 2002, ISBN 978-0471499725.
• D.M. Eggleston, F.S. Stoddard, “Wind turbine engineering design”, Van
Nostrand Reinhold, 1987, ISBN: 978-0442221959
Slides related to the topics covered in
the course will also be provided.
- Enseignant: ALESSANDRO CROCE