vertical axis wind turbine

vertical axis wind turbine marketing selling point1. Blade can automatically regulate its windward side. When the wind speed is1.8m/s, our VAWT can start-up, which Maximize the wind power efficiency and reduce the wind turbine facility idling. 2.Its blade windward side is concave curved, which can catch the maximum of wind thus fully obtain wind energy. 3. Blade can automatic regulate its windward side. 4. When it is stormy wind, anemometer can change the windward angle by wind sensor, thus to get a constant rotating speed. 5. Brake protection device, when there is storm, the back side of the blade; the hydraulic retractable spear automatically shrinks itself to make windward side change its angle to face to the wind, thus reducing the windward area.