Salient White Elephant

March 12, 2009

Extremely Large Horizontal Axis Wind Turbine With Three Rotors and Three Towers

This post describes an idea for an extremely large Horizontal Axis Wind Turbine. The turbine has three towers and three rotors. This idea is similar to the Radially Displaced Darrieus Rotor. (You might want to read that post first.)

This turbine has the same three lattice towers as the Radially Displaced Darrieus Rotor, and it also has a ring on top that can rotate about the center of the structure. In addition to this structure, put a long horizontal tube on top of the ring, and mount three horizontal axis rotors on the tube:

Horizontal Axis Turbine With Three Rotors and Three Towers

Horizontal Axis Wind Turbine With Three Rotors and Three Towers

Now if the three nacelles and their rotors are instead suspended from the horizontal tube on three short vertical tubes, then the force of gravity keeps the rotor disks vertical. If desired, the short vertical tube from which a nacelle and its rotor is suspended may rotate somewhat about the supporting horizontal tube above. This provides a teetering action that helps make to mitigate the fluctuating loads associated with wind gusts.

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