A Simple Measurement of Wind Turbine Blade Vibration Using a 3 Dimensional Motion Analysis Software

Abstract

Blade tip displacements of a real medium size wind turbine were measured with a 3 dimensional motion analysis software using high-speed video image. By studying different calibration methods, the measurement with error less than 20% seemed to be possible. The responses of three bledes were similar one another, and it was affected by the change of the aerodynamice force when it passed in front of the tower. In order to clarify the blede response characteristics and to obtain the information to improve the accuracy of the response analysis, more study seems to be necessary with more measurements.