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38_meter_wind_turbine_blade_design.pdf

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38 Meter Wind Turbine Blade Design Internship Report Mickaël Edon Supervisor, French teacher: Main supervisor: Project supervisor: Project co-worker: Project co-worker: Florence Tamet Jane Kruse Tupac Díaz Lopez Joan Pros Garcia Tong Wu June 2007 Acknowledgements Firstly, I would like to thank the Nordic Folkecenter for Renewable Energy for their hospitality and for having welcomed me in Ydby (North Denmark). I am especially grateful to all the working staff that helped in my project. With
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    3388 MMeetteerr WWiinndd TTuurrbbiinnee BBllaaddee DDeessiiggnn  IInntteerrnnsshhiipp RReeppoorrtt  MMiicckkaaëëll EEddoonn  June 2007 Supervisor, French teacher: Florence Tamet Main supervisor: Jane Kruse Project supervisor: Tupac Díaz LopezProject co-worker: Joan Pros Garcia Project co-worker: Tong Wu       AAcckknnoowwlleeddggeemmeennttss  Firstly, I would like to thank the Nordic Folkecenter for Renewable Energy for their hospitality and for having welcomed me in Ydby (North Denmark). I am especially grateful to all the working staff that helped in my project. Without their help, it would not have been possible. I am deeply indebted to my supervisors, Jane Kruse and Tupac Díaz Lopez for their friendship and help throughout the project. Your organization, technical advice, and access to outside resources have been a tremendous gift and I for one won’t soon forget. I would also like to extend a special thank you to Joan Pros Garcia and Tong Wu, my co-workers on this project for their motivation and taste for hard work. I am particularly thankful to the Ingeniørhøjskolen i Århus and its teachers for having welcomed and trained me in Århus (West Denmark). I am truly grateful to the Region Rhône-Alpes for according me the grant explora sup 2006-2007 Last but not least, I would like to thank the ”IUT” of Annecy-le-Vieux and the ”Mesures Physiques” department teachers for the broad teaching I was given and for the enjoyment and interest they encouraged.   - 3 - TTaabbllee oof f  ccoonntteennttss  General Introduction………………………………………………………..…………….... 4  1. Nordisk Folkecenter for Renewable Energy description…………………...……………... 4 2. Internship Description……………………….………………..…………………………… 4 3. Project Description………………………………………..……………………….……….5 II Blade characterization………………………………...…………………………………. 6 III Introduction to wind turbine and wind classes…….…………………………………. 7 1. Vertical axis turbines……………………...…………….………………………………… 7 2. Horizontal axis turbines………………...……………….………………………………… 7 3. Wind speed classes……………………………………..…………………………………. 8 IV Dimensions……………………………...……………………………………..………… 10 1. Profile type……………………….………………..…………………...…………..……… 10 2. Chord lengths…………………….………………..……………...………………..……… 11 3. Transition parts…….………………….………………..………………….……………… 13 4. Angle of attack…………………….………………..……………………………..………. 13 5. Twisting angles…………………….………………..……………………………..……… 14 6. Tip speed ratio ……………………….………………..…………..……………..……….. 16 V Pitch control and power curves……………………...………………………………….. 17 1. Why pitching?……………………….………………...………….………………..……… 17 2. Pitch control results……………………….………...…………….………………..………19 VI Blade materials……………………………...…………………………………………... 22 1. Materials ………………..………………………………………………………………… 22 2. Inner support and shell thickness ……………………….………………………………… 23 VII Loads calculations……………………………...……………………………………..... 24 VIII Wind Rotor Design system 2.0……………………………...………………………... 26 1. Programme outline……………………….………………..……………………….……… 26 2. Instructions……………………….………………..………………………………….…… 28 IX Future development……………………………...……………………………...………. 31 X Conclusion……………………………...………………………………….………………33 XI Glossary…………………………...…………………………………………...………… 35 XII References…………………………...…………………………………….……………. 37 XIII Appendix…………………………...……………………………………..…………… 38

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