F - Mech Eng,Light,Heat,Weapons – 03 – D
Patent
F - Mech Eng,Light,Heat,Weapons
03
D
170/28
F03D 7/04 (2006.01)
Patent
CA 1150157
Inventor: J. WARNE CARTER, JR. and J WARNE CARTER, SR. Invention: WIND-DRIVEN GENERATOR APPRATUS AND METHOD OF MAKING BLADE SUPPORTS THEREFOR Abstract of the Disclosure Wind generator apparatus employs an induction generator with a wind-driven rotor. Connection of the induction generator to AC power lines is controlled by apparatus that compares generator rpm and line frequency. The rotor blades have a pretwisted, varying-chord inboard portion and an untwisted, constant-chord outboard portion. The blades are self-starting, operate efficiently over a range of wind speeds with constant pitch maintained by a torsional biasing mechanism, and pitch up automatically when the normal rpm operating range is exceeded. An im- proved blade-supporting spar of low torsional stiffness has an I-beam configuration with filament-wound flanges. A pitch damper prevents torsional oscillations while permitting the blades to pitch up readily. The rotor, which includes a teetering hub, is free to weather-vane about the axis of a supporting tower, but a yaw damper limits angular velocity. A guy wire and gin pole arrange- ment stabilizes the tower and permits easy raising and lowering of the tower.
411635
Carter J. Warne
Gowling Lafleur Henderson Llp
LandOfFree
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