An Experimental Study on the Vibration Characteristics of the Rotor Blade with Fiber Reinforced Plastics

초록

With the current background of increasing oil price, a number of researches on development and supply of renewable energy are on process. Wind energy is one of them. Not only as energy itself, but also as travel resources, wind energy is ideal substitute for Korea equipped with appropriate conditions. The purpose of this paper is that investigates the dynamic behavior characteristic of W.T.S (Wind Turbine System) and carries out the evaluation analysis during operating W.T.S. To investigate the dynamic behavior characteristic of W.T.S, the experiments to measure vibration of the blade from the attached accelerometer on the flap and edge section of the blade that is one of the most important elements of dynamic characteristic of W.T.S are performed. Natural frequency and mode shape are calculated with commercial program (ANSYS) using the measured vibration acceleration that receives the signal with F.F.T Analyzer from the accelerometer. For validation of these experiments, the finite element analysis is performed with commercial F.E.M program (ANSYS) on the basis of the natural frequency and mode shape. The results indicate that experimental values have good agreements with the finite element analysis.