The aim of this lecture course (6 ECTS) is that students understand the physical principles of wind energy and the technology of modern wind energy systems. It consists of lectures and exercises, and is given by Prof. Dr. Moritz Diehl and Nick Harder.
Contents:
 global wind energy resource
 aerodynamic principles of wind turbines
 design of modern wind turbines
 control of modern wind turbines
 the electrical system of wind turbines
 alternative concepts and airborne wind energy
When/Where
Due to Corona regulations the lectures and the exercises will take place online (at least until the mid of June) using Zoom Platform.
The first lecture will be held on 12.05.2020 (Tuesday).
The course will be held on:
 Tuesdays 12:30  14:00h
 Wednesdays 12:15  14:00h
Please, use the following link to access the class for both lectures and exercise sessions. Password: 5BCxhi3Xm
The lectures will be recorded and posted on this webpage.
Course Information
The Wind Energy Systems (WES) course has two modes of instruction: lectures and exercises. The lectures are given by Moritz Diehl. One biweekly timeslot is dedicated to an 'exercise session' that will be coordinated by Nick Harder (nick.harder@inatech.unifreiburg.de).
The exercise sessions are held on a biweekly basis. First exercise sheet will be provided on 20.05 after the lecture. One week after you receive the exercise sheet a video recording of the exercise solution will be posted on this webpage, and another week later an online exercise session will take place, where you can ask questions to the previous exercise sheet and a new exercise sheet will be provided. The exact schedule can be found below.
The grade for the course corresponds to the grade of the final exam. This final exam is 'closedbook,' which means that ONLY pens, a calculator, and one A4 page (that is, two sides) of notes can be used. The questions will be partially multiplechoice and partially shortanswer.
Lectures
Date  Title / Slides  Videos 
12.05.2020 
Chapter 1: Introduction Section 1.1: Introduction (Slides) Section 1.2: Energy content of the wind 

13.05.2020 
Section 1.3: Power density of blade area Section 1.4: Components of modern wind turbine 

19.05.2020 
Section 1.5: Blade & Airfoil nomenclature Chapter 2: The Wind Resourse Section 2.1: Origins Section 2.2: Global patterns Section 2.3: Mechanics of wind 

20.05.2020 
Section 2.3: Mechanics of wind (continuation) Section 2.4: Stable and unstable atmospheric stratification 
Lecture_4_1_Section_2_3_continuation

26.05.2020 
Section 2.5: Statistics of wind Section 2.6: Spectral properties of wind


27.05.2020 
Section 2.6: Spectral properties of wind (continuation) Chapter 3: Aerodynamics of Wind Turbines Section 3.1: Wakes (Wind_wakes_image) Section 3.2: Actuator disc model and the Betz' limit 
Lecture_6_1_Section_2_6_continuation

02.06.2020  
09.06.2020  
10.06.2020  
16.06.2020  
23.06.2020  
24.06.2020  
30.06.2020  
07.07.2020  
08.07.2020  
14.07.2020  
21.07.2020  
22.07.2020  
28.07.2020  
29.07.2020 
Exercises
Date  Title  Link 
20.05.2020  Exercise Sheet 1*  Exercise_Sheet_1 
27.05.2020  Solution to Exercise Sheet 1  Exercise_Sheet_1_Solution 
03.06.2020  Q&A session + Exercise Sheet 2  online classroom 
10.06.2020  Solution to Exercise Sheet 2  
17.06.2020  Q&A session + Exercise Sheet 3  online classroom 
24.06.2020  Solution to Exercise Sheet 3  
01.07.2020  Q&A session + Exercise Sheet 4  online classroom 
08.07.2020  Solution to Exercise Sheet 4  
15.07.2020  Q&A session + Exercise Sheet 5  online classroom 
22.07.2020  Solution to Exercise Sheet 5 
*some parts of the exercise sheet 1 have not been covered in the lecture yet. These topics will be covered on upcoming week.
Special Events

Invited Talk on Industrial Practice of Wind Energy Converter Control. Tuesday, June 23, 2020, 12:30. For more information, follow this link.
Resources
The lectures script can be found here.
This course was also held in SS2018, all the materials from that course are available here.
Links of interest
20200512 Report on renewable power generation costs in 2018 (by IRENA) (PDF)
20200519 Which way a wind turbine turns might not seem to matter (by the Economist) (screenshot)
20200519 Atmospheric circulation patterns (from wikipedia)
20200526 Article on the Global Energy Transition (by the Economist)