Cost-Effective Design and Operation of Variable Speed Wind by D-P. Molenaar PDF

By D-P. Molenaar

ISBN-10: 9040723834

ISBN-13: 9789040723834

During this thesis a layout instrument has been built that gives the chance to generate exact and trustworthy dynamic versions of the entire wind turbine. The types should be both used to judge the effect that layout offerings have at the fiscal viability, or to evaluate the dynamic habit of the chosen wind turbine configuration less than quite a few stipulations.

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Extra resources for Cost-Effective Design and Operation of Variable Speed Wind Turbines: Closing the Gap Between the Control Engineering and the Wind Engineering Community

Example text

Notice that this assumption might be too restrictive in the case of weak grids as well as in the case that a wind farm instead of a single wind turbine is connected to the grid. To begin with, an inventory of the state-of-the-art wind turbine design codes will be made in order to provide an answer to the question whether or not the models available in the existing codes are suited for our purpose. From this inventory it will be concluded that the existing models are not adequate to solve the main thesis problem.

Deterministic versus stochastic For the design of an offshore wind turbine the wind generated waves are the most important [143]. g. planetary waves, tsunamis, and capillary waves) are either occurring beyond the relevant frequency range or their energy content is too small. 5 Hz [144]. The wave velocity of these random waves is in the current design codes decomposed into a deterministic, and a stochastic wave description. Deterministic wave inputs are used to model extreme sea waves, while stochastic wave inputs are to be used for the prediction of the wave loads which an offshore wind turbine will experience during its life-time.

The design code FLEX5 has been developed at the Fluid Mechanics Department of the Technical University of Denmark. FLEX5 simulates the dynamic behavior of both onshore and offshore wind turbines wind turbines with 1 to 3 rotor blades, fixed or variable speed, pitch or stall controlled. The aero-elastic model is formulated in the time-domain, and uses a relatively limited number of degrees of freedom to describe rigid body motions and elastic deformations. In the present version FLEX5 is limited to monopile foundations; • FLEXLAST (FLEXible Load Analysing Simulation Tool) [15, 299].

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Cost-Effective Design and Operation of Variable Speed Wind Turbines: Closing the Gap Between the Control Engineering and the Wind Engineering Community by D-P. Molenaar


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