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Wind Energy Technology I (WET I)

The course Wind Energy Technology I (WET I) is the first of two modules that introduce in the technology and functionality of wind turbines. In this first part we teach the fundamentals of wind energy technology. The module is subdivided into lectures, tutorials, and a one-day excursion (on voluntary basis).

The module gives 6 CP and is offered in winter and summer semesters. It is compulsory for students of the Master's programme Wind Energy Engineering. In summer semesters, the course is given in English.

Learning Objectives

The module WET I gives insights into manifold competences in the area of wind energy technology. After successful completion, the students can

  • name the components of a wind turbine and explain their functionalities,
  • explain the features of the wind and calculate the annual energy production,
  • perform an aerodynamic design of rotor blades for optimum conditions,
  • utilise the blade element method and the stationary blade element momentum theory (BEM),
  • compare the behaviour of fast and slow running turbines,
  • evaluate the significance of different loss types for different turbine configurations,
  • create a power curve,
  • explain different control strategies for power limitation,
  • evaluate limits of scaling on the basis of similarity laws,
  • explain advantages and disadvantages of different drive train concepts, and
  • explain different foundation types of offshore wind turbines.


The lecture of WET I contains the following topics:

  • Introduction: Why do we need wind energy?
  • Historical development of wind turbines
  • Ressource wind
  • Energy yield estimation
  • Fundamentals of aerodynamics
  • Design of wind turbines and their components
  • Rotor characteristics and characteristic diagrams
  • Scaling / similarity laws
  • Laws and standards
  • Offshore wind energy


In the tutorials of WET I, students immerse themselves in the lecture topics. The tutorials contain interactive units, in which students solve problems independently (with supervision), and units in the CIP pool.


On voluntary basis, IWES offers one-day excursions in the framework of WET I. In winter semester 2017/18 for instance, we visited Fraunhofer IWES in Bremerhaven. Students had the opportunity to gain insights to the impressive testing infrastructure with the rotor blade test rig and the Dynalab, a unique testing facility for drive trains. The highlight of the excursion was the visit of Fraunhofer IWES' own test turbine, the prototype of the world's largest offshore wind turbine, the Adwen AD 8-180, with a rated power of 8 MW and a rotor diameter of 180 m.


For successfully completing the module, students have to pass an oral exam. The oral exam has a duration of approximately 20 minutes. In the oral exam, students need to explain the basic theoretical background of the different topics that are discussed in the lectures and the tutorials. Theoretical derivations are also part of the oral exam.

Students have to enroll for the exam online at the Academic Examination Office (Akademisches Prüfungsamt) within the respective time limits.


In summer semesters the module is given in English.