Avaliação de turbinas eólicas utilizando simulações estocásticas Monte Carlo

Abstract

The structural evaluation of wind turbines is an issue that depends on variables such as wind patterns, type and dimensions of the wind turbine as well as uncertainties related to these factors. To enter the uncertainties encountered in the evaluation of wind turbines, .it is necessary to establish probability distributions for the physical parameters of the medium. In this paper we propose a probabilistic structural analysis using finite element method for stochastic modeling of the uncertainties associated with wind power generation. Is evaluated in response to loads random structure, to a stability analysis of the system. With this purpose we developed a finite element model with the commercial program ANSYS able to faithfully reproduce the behavior of the tower subjected to wind loads produced by wind. Once the load is considered random, ie the input parameters are subject to uncertainties, the goal is to determine the variation of output parameters, given the initial uncertainty. This work used a point load variaável the hub of the turbine as a source of charging. It will be used the Monte Carlo method and the method of probabilistic analysis. From the analysis of the results, it is expected to know the probability distributions for parameters of materials, stresses, displacements and internal loads on the structure.