Effect of Yaw on Horizontal-Axis Wind-Turbine Loading and Performance

摘要

Tests were conducted on the Mod-0 100 kW Experimental Wind Turbine to determine the effects of yaw on rotor power, blade loads and teeter response. The wind turbine was operated for extended periods at yaw angles up to 49 exp 0 to define average or mean response to yaw. As a result of the tests it was determined that the effect of yaw on rotor power can be approximated by the cube of the velocity normal to the rotor disc as long as the yaw angle is less than 30 exp 0 . Blade bending loads were relatively unaffected by yaw, but teeter angle increased with wind speed as the magnitude of the yaw angle exceeded 30 exp 0 indicating a potential for teeter stop impacts at large yaw angles. No other adverse effects due to yaw were noted during the tests. (ERA citation 07:050051)