发明名称 |
Wind-driven generator apparatus and method of making blade supports therefor |
摘要 |
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 improved 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 arrangement stabilizes the tower and permits easy raising and lowering of the tower.
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申请公布号 |
US4366387(A) |
申请公布日期 |
1982.12.28 |
申请号 |
US19790037774 |
申请日期 |
1979.05.10 |
申请人 |
CARTER WIND POWER |
发明人 |
CARTER, JR., J. WARNE;CARTER, SR., J. WARNE |
分类号 |
F03D11/00;F03D1/06;F03D7/02;F03D9/00;F03D11/04;H02J3/40;(IPC1-7):F01D5/14;F03D7/04;H02J3/08 |
主分类号 |
F03D11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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