WIND ENERGY GENERATION DEVICE
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United States of America Patent
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app pub date -
Nov 3, 2009
filing date -
Nov 5, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Wind turbine devices are presented that use counter rotating rotor assemblies in a horizontal axis wind turbine (HAWT) arrangement. This reduces the torque applied to the HAWT thereby reducing the structural requirements of a wind energy generation system. Additionally, the counter rotating rotor assemblies cooperatively rotate an output shaft. In one arrangement, this shaft is a vertical shaft which allows removing power generation equipment from the axis of rotation of a HAWT to a position below the wind turbine and/or located on the ground.
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