Servo-controlled extender mechanism for extendable rotor blades for power generating wind and ocean current turbines
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United States of America Patent
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Sep 1, 2009
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N/A
app pub date -
Mar 18, 2005
filing date -
Mar 22, 2004
priority date (Note) -
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Abstract
A power generating system wherein a turbine is mounted on top of a tower or tethered underwater. The turbine includes a rotor having a main blade connected to a rotor hub and an extender section. An adjusting device positions the extender blade between a retracted position within the main blade and to an extended position to expose more or less of the rotor to the fluid flow. The adjusting device includes a servo-controlled rack and pinion mechanism that converts rotation of the pinion by a servomotor into linear motion of the extender blade. A generator is connected to the turbine for generating electrical energy.
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