Dynamic Identification of a Vertical Axis Wind Turbine

This paper presents the monitoring campaign carried out over a small size vertical axis wind turbine in the experimental facility of the Savona Harbor. The study is part of the on-going experimental activity investigating the wind field, power production and structural behavior in standstill parked and operating conditions of the turbine. The dynamic response is recorded by servo-accelerometers and strain gauges. Wind field is supplied by sonic anemometers installed nearby. The analysis of the acquired data under different incoming wind and turbine operational conditions provides fundamental frequencies and damping coefficients and supplies information useful to carry out structural verifications and fatigue analyses.