ABSTRACT
This chapter focuses on the results of a research programme carried out by the Wind Engineering Department of the Danish Ship Research Laboratory during the period 1977–1979. The research programme was funded by Teknologiradet, and the general purpose of the project was to develop test procedures and test equipment which could be used for investigation of large wind energy converters (WECs) in general. The Tvind WEC differs from the other large Danish WECs by having the rotor located downwind of the tower. Strain conditions were measured on the surfaces of the blades and on the rotor shaft by strain gauges. Accelerations in the horizontal plane of the nacelle were measured by linear accelerometers placed on the bearings which support the primary rotor shaft. Transformation of energy is done by a 2MW synchronous generator which is placed in the nacelle.
