Schaffarczyk, A. P. and Kemena, Tronje (2008) A Simplified Model for Fatigue Load Calculations of Small Wind- Turbines with Vertical Axis of Rotation. [Paper] In: DEWEK 2008. , 26.-27.11.2008, Bremen, Germany .

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Abstract

Wind Turbines with a vertical axis of rotation (VAWT) recently regained new interest. In this paper we summarize results from [2] in which our new aerodynamic model [1] was applied to an existing 50 kW machine. The presentation is organized as follows: First we present our simplified model which was formulated in closest analogy along the rules from IEC 61400-2 used for horizontal axis wind-turbines including some rigid-body extensions. Second we shortly discuss the only to us known aeroelastic code for VAWT, GAROS. Finally we present our results for fatigue loads from
application to an 50 kW (140 m² swept area) prototype from both computations. As a main result we see that the differences between our simplified model (rigid body model with most equations coming from engineering mechanics)
and a full aeroelastic modelling seems to be largest for the beam system supporting the blades on the shaft

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