Optimization of the location an array of sensors using finite element method for structural health monitoring (SHM) of the nacelle cover on floating offshore wind turbine (FOWT)
Ocean Wind energy is becoming popular because of its capability of harnessing energy and relatively lower cost power generation. The size of the wind turbine system for the Floating Offshore Wind Turbine (FOWT) is normally far larger than in the land. This is because the noise and the landscape of t...
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Sprache: | eng |
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Zusammenfassung: | Ocean Wind energy is becoming popular because of its capability of harnessing energy and relatively lower cost power generation. The size of the wind turbine system for the Floating Offshore Wind Turbine (FOWT) is normally far larger than in the land. This is because the noise and the landscape of the structure will not be a problem for the resident as in the land. The large turbine of the FOWT means power generated economically which is one of the key benefits of offshore wind turbines. The nacelle cover is a protective compartment that contains major components of ocean wind turbines such as rotors and generators. This compartment has to withstand the wind loads, dynamics loads and the weight of the major components inside. In such loads there is a possibility the nacelle structure can be damaged or has cracks during operation of the FOWT. To handle this problem a structural health monitoring (SHM) component may be a solution. This paper describes a possible application of Finite Element Method (FEM) for SHM of the nacelle of FOWT, by optimizing the location of an array of a limited number of sensors to monitor the local stress/strain field. As a case study, the optimization begins with simulation of the stress field in the nacelle structure with no damage - condition, and 3 (three) other damage conditions. Then, by using the sensitivity analysis an optimum placement of the array of the sensors can be determined. The optimum location of the array can be critical for detection of the early damage of the nacelle structure. In general, application of FEM to determine optimum location of the array of the sensors offers great potential for detecting and locating damage in a structure nacelle on FOWT at an early stage. |
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ISSN: | 0094-243X 1551-7616 |
DOI: | 10.1063/5.0206043 |