Preliminary communication

Simple dynamic model of wind turbine tower with experimental verification

Predrag Đukić ; University of Split, University Department of Professional Studies, Kopilica 5, HR-21000 Split, CROATIA
Hinko Wolf ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Ivana Lučića 5, HR-10000 Zagreb, CROATIA
Jani Barle ; University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, R. Boškovića 32, HR- 21000 Split, CROATIA

Abstract

The main goal in designing the wind turbine is ensuring structural safety and optimal operational performance. Key aspects to be addressed are: long design life, sensitivity of structure to vibration and resonance, non-deterministic wind loads with significant time variations and micro-location dependence. In order to achieve these goals, a simple dynamic lumped-mass model of a conic tubular steel wind turbine tower has been developed in this paper. The tower stiffness matrix is determined by considering the stiffness of a cantilever beam with variable cross-section, and lumped masses for each conical segment are determined in such a way that the centres of gravity of conical segments match their actual position in the structure. There is a very good agreement between the measured field data and the results obtained by the developed simple numerical model.

Keywords

wind turbine; dynamic model; verification; monitoring

Hrčak ID:

169859

URI

https://hrcak.srce.hr/169859

Publication date:

21.7.2016.

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