WIND-ELECTRIC POWER PLANT Russian patent published in 1997 - IPC

FIELD: wind-electric power engineering; heavy-power vertical-shaft wind-electric power plants. SUBSTANCE: wind-electric power plant has floating mount placed in round pond that carries vertical-shaft windwheel with airfoil blades rotating about reinforced-concrete tower in top and bottom bearing assemblies. Bottom bearing assembly is provided, in addition, with thrust bearing in the form of annular pontoon. Airfoil blades are made in the form of two brackets rigidly joined with tilted truss; blades are greatly elevated from earth surface by means of tilted trusses made of airfoil-shaped members and by flexible tie rods with shields. Tilting angle of trusses is chosen considering optimal distribution of forces among truss, flexible tie rod with shield, brace, and blade; torque due to pulling forces acting on blades is imparted to pontoon by means of braces and tilted trusses. Plant is provided with inertial accumulator in the form of floating mount with liquid medium of low freezing temperature which is involved in rotary motion while power plant is running and reduces friction loss and heat consumption at low ambient temperatures. Power is produced by several standard generators of various capacities and transmitted through useful load take-off assembly through gearless transmission; generator capacity and quantity are chosen considering enlarged stages of wind velocity variation; plant is started by single motor or motor-generator set of specified power capacity required for reliable starting; useful load take-off assembly is made as lever-rim unit rigidly fixed with pontoon and contacting through its external side the generator castors. EFFECT: improved reliability, reduced friction and heat loss. 5 cl, 2 dwg