METHOD FOR CONTROL OF WIND-POWERED ENGINE ROTOR ROTATION FREQUENCY WITH VERTICAL AXIS AND WIND-POWERED ENGINE FOR ITS REALISATION Russian patent published in 2009 - IPC F03D3/00 

FIELD: engines and pumps.

SUBSTANCE: invention is related to wind power engineering and may be used for driving actuators of electric generators, and other mechanisms with constant rotation frequency. Wind-powered engine wing installed on rotor in initial position is put into starting position with angle of attack sufficient to start the motion at wind speed from 1.5 m/s, as wind speed increases, wing is displaced from rotor centre, and as linear speed of wing motion grows, working angle of wing attack is provided, and specified frequency of rotor rotation is maintained, turning the wing. As wind speed reduces, wing is displaced to rotor centre. As linear speed of wing motion reduces, working angle of wing attack is provided, and specified frequency of rotor rotation is maintained, turning the wing. At those sections of trajectory, where the wing moves against wind or along with the wind, wing is installed into vane position, and when wind speed exceeds the critical value, wing is installed in vane position and is displaced to rotor centre to the maximum. Rotor is installed on hub, and it consists of cross beams arranged in the form of pantograph comprising at least two parallel bars. With their some ends, bars are hingedly installed on hub with the possibility of rotation in vertical plane, and cantilevers with wings are hingedly installed on other ends of bars. Each wing has possibility of limited rotation around vertical axes and includes rigidly installed guide block in the form of orifice with V-shaped cut, with which spring-loaded lever interacts, being hingedly installed on one of rotor bars. Wing gravity centre is located on axis of its rotation, and axis of rotation is displaced relative to focus to the front edge. One rod of each cross beam comprises toothed sector, and counterweight with gear racks is installed coaxially to hub with the possibility of vertical displacement, and each rack is engaged with single toothed sector. Variation of angle of attack takes place as cross beam turns in vertical plane. Pneumatic damper, movable part of which is rigidly fixed with counterweight, is installed coaxially to hub.

EFFECT: provision of rotor self-starting at wind speed from 1,5 m/sec and maintainance of specified rotations in case of wind speed variation.

6 cl, 13 dwg