PUB - Self-erecting wind energy plant with hub height of 180 m
As part of the "HyTower" project funded by the AiF, a publication on the subject of self-erecting wind turbines with a hub height of 180 m was published. A concept for a self-erecting wind turbine with a steel hybrid tower was proposed and investigated. The work was done in cooperation with the Chair of Steel Construction and Composite Steel Construction at the University of Siegen and the stb of the RWTH.
Authors: Reese, Christian; Pak, Daniel; Korte, Sebastian; Kemper, Frank; Friehe, Mirko; Fontecha Gonzalez, Robert; Schmitz, Katharina
Self-erecting wind energy plant with hub height of 180 mWithin the FOSTA research project P1392 “Self-erecting on-shore wind energy plants with hub heights greater than 120 m – hybrid tower with lifting device for self-erection”, a self-erect-ing wind energy plant with steel hybrid tower for low-wind sites was developed, which does not require the use of special crawler cranes. The tower of the example plant consists of an 80 m high lattice tower with a special transition piece, through which the 100 m high tubular steel tower including nacelle and rotor is lifted into its final position with the help of a strand lifting system. To stabilise the tubular steel tower during the lift, a specially developed stabilisation system is used, which takes up the tower bending moment via revolving, guided cylinders, which are arranged in two levels in the transition piece and keep the tubular tower in the vertical position. The design and dimensioning of the tubular steel tower, the lattice tower and the transition piece were carried out for the final state. For the optimisation of the lattice tower, a specially developed soft-ware was used, which designs a weight-optimised lattice tower structure on the basis of probabilistic methods. For the tubular steel tower, it was shown that the transverse loads acting from the hydraulic cylinders can be carried. On the basis of the investigated example plant, it could be shown that con-struction and operation of the self-erecting wind energy plant are economically possible