FREE-YAW, FREE-PITCH WIND-DRIVEN ELECTRIC GENERATOR APPARATUS
Wind-driven electric generator apparatus has a generator head supported on a tower for free-yaw movement and for free-pitch movement within predetermined limits. The generator head has a downwind rotor with a pair of elongated blades mounted on a hub that is rigidly attached to a rotor shaft driving...
Saved in:
Main Author | |
---|---|
Format | Patent |
Language | English French |
Published |
21.05.1996
|
Edition | 6 |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Wind-driven electric generator apparatus has a generator head supported on a tower for free-yaw movement and for free-pitch movement within predetermined limits. The generator head has a downwind rotor with a pair of elongated blades mounted on a hub that is rigidly attached to a rotor shaft driving an electric generator. The blades are flexible and have a coning angle therebetween that varies with wind velocity. The generator head is capable of aligning itself with the wind direction azimuthally and elevationally. A yaw brake prevents an excessive yaw rate. In a most preferred embodiment, pitch movement and yaw movement beyond small angular ranges are regulated, and an electrohydraulic yaw drive system corrects gross azimuthal misalignment with respect to the wind direction. |
---|---|
Bibliography: | Application Number: CA19922082585 |