A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener loads and pitch bearing loads. The shroud may further incorporate a ring gear for driving an electric generator. In one embodiment, the electric generator may be cantilevered from the nacelle such that the gear on the generator drive shaft is contacted by the ring gear of the shroud. The shroud also provides protection for the gearing and aids in preventing gear lubricant contamination.
This Invention was made with Government support under NREL Subcontract No. ZAM-7-13320-26, Prime Contact DE-AC36-83CH10093 awarded by the Department of Energy. The Government has certain rights in this Invention.