Wind turbine blade with integrated stall sensor and associated method of detecting stall of a wind turbine blade

摘要

A wind turbine includes an electrical stall sensor (26) configured on a pressure surface (23,24) of at least one turbine blade at a location to detect backflow in a stall condition. The stall sensor includes a flap (30) pivotally configured on the respective pressure surface so as to be moved from a first position towards a second position by backflow over the pressure surface during a stall condition. A sensor circuit (32) responds to movement of the flap between the first and second positions and generates a corresponding electrical signal that indicates the stall condition.