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 opera-tional conditions provides fundamental frequencies and damping coefficients and supplies information useful to carry out structural verifications and fatigue anal-yses.