Turbulence influence on optimum tip speed ratio for a 200 kW vertical axis wind turbine
2016 (English)Conference paper (Refereed)
The influence of turbulence intensity (TI) on the tip speed ratio for maximum power coefficient, here called λCp-max, is studied for a 200 kW VAWT H-rotor using logged data from a 14 month period with the H-rotor operating in wind speeds up to 9 m/s. The TI - λCp-max relation is examined by dividing 10 min mean values in different turbulence intensity ranges and producing multiple CP(λ) curves. A clear positive relation between TI and λCp-max is shown and is further strengthened as possible secondary effects are examined and deemed non-essential. The established relation makes it possible to tune the control strategy to enhance the total efficiency of the turbine.
Place, publisher, year, edition, pages
2016. Vol. 753, 032048
, Journal of Physics Conference Series, ISSN 1742-6588 ; 753
IdentifiersURN: urn:nbn:se:uu:diva-304789DOI: 10.1088/1742-6596/753/3/032048OAI: oai:DiVA.org:uu-304789DiVA: diva2:1034006
6th Science of Making Torque from Wind Conference, Technical University of Munich, Munich, Germany, Oct. 5-7, 2016