WIND MOTOR WITH "BANANA" BLADES AND METHOD OF CONTROL OF ROTATIONAL FREQUENCY OF WIND-POWER TURBINE Russian patent published in 2006 - IPC F03D3/04 

FIELD: wind power engineering; wind motors with vertical axis of rotation.

SUBSTANCE: proposed wind motor includes wind-power turbine whose blades are made in form of aerodynamic profile; each profile of turbine blade is symmetrical and is formed by two smooth curves of different degree of curvature but of similar sign; axis of symmetry passes in center of length of wind-power turbine blade profile. Each blade consists of two or several parts interconnected by lag hinges for positive turn of any part of blade. Besides that, new method of control of rotational speed of wind-power turbine is developed when blades of wind-power turbine are shifted radially at change of wind velocity, thus changing distance between blades and axis of rotation of wind-power turbine; in case of hurricane, blades are positively brought nearer to axis of rotation of wind-power turbine and are turned around vertical axis of blade forming easily streamlined surface.

EFFECT: enhanced efficiency of factor of utilization of wind power; development of new generation of power; enhanced efficiency of control of turbine rotational speed.

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