WINDWHEEL WITH SPEED GOVERNOR Russian patent published in 1998 - IPC

FIELD: wind-power engineering. SUBSTANCE: several spring-loaded couplings 3 are mounted on hollow shaft 1 and linked through pairs of levers 4 with blades 5. Springs 2 are fitted on shaft 1 and inserted in each other without coming in contact. Springs 2 are of different stiffness. Blades 5 are joined in pairs and arranged diametrically. Each pair of blades 5 is coupled with definite spring 2. When wind speed decreases, each pair of blades 5 assumes working position corresponding to wind speed to which respective spring 2 is adjusted. This provides for windwheel operation at wind speeds lower than 5 mps. EFFECT: enlarged range of wind speeds for windwheel operation including very low speeds. 2 cl, 10 dwg