Importance

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Abstract

A wind turbine operated electrical generator system, said system comprising a wind turbine of the axial flow type, the blades of the turbine including tip portions pivoted with respect to the remainder of the blade, a generator driven by the wind turbine and designed to operate within a given rotational speed range, said speed range being below the speed at which the wind turbine can develop its maximum power, a pin and socket connection on the outer end of at least some of said blades, and preferably each blade, for connecting the tip thereto and a cam track on the pin or socket, with a follower on the socket or pin, respectively, the cam track being shaped to cause the tip to pivot under centrifugal movement of the tip, so that a change in the torque produced by the pivoting at all times maintains the speed substantially within said given range, resilient means being provided to restore the position of the or each tip against centrifugal action.

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First Claim