Wind Turbine Technology and Aerodynamics

• Define airfoil data
• Compute induced velocities
• Develop a computer code to calculate aerodynamic loads
• Calculate internal loads and the static deformation of a loaded wind turbine blade
• Compute the eigenmodes and associated eigenfrequencies for a wind turbine blade
• Draw velocity triangle incl. induced velocities
• Determine annual energy production for a wind turbine
• Understand and be able to solve electric DC and AC circuits using Ohm’s and Kirchhoff’s laws
• Understand and be able to quantify the relevant component’s operation with equivalent circuits
• Understand and be able to quantify the components interaction as a part of the system in modern wind energy
• Calculate active and reactive power in AC circuits
• Calculate loads and energy production for a vertical axis wind turbine

Placement: wind atlas, influence of the terrain and annual wind distribution.
Aerodynamics: two-dimensional aerodynamics and three-dimensional effects. Use of Blade Element Momentum theory to determine the energy production for a rotor with a given twist and chord distribution. Control of a wind turbine (stall-, pitch-, and variable speed control). Structure: Static deflections and natural vibrations for wind turbine blades.
Electrical wind energy system topics:
-Ohm’s and Kirchhoff’s laws, calculation of simple resistive circuits
-Coils and capacitors
-AC voltages and currents, phasors, complex calculation
-Concepts of active and reactive power
-AC circuits
-Three phase power system
-High level component introduction to models and operation: transformers, generators cables, converters

Basic fluid mechanics. Programming skills required (Matlab, Python or similar)

Lectures