Vertical wind turbine
We have the following features:
1. Blade can automatically regulate its windward side.
2. Its windward side is concave and curved, which can catch the maximum of wind thus fully obtain wind energy resource.
3. Blades can automatically regulate its windward side. Windward side ascertained is traced by sensor of dogvane.
4. When it is storm, 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 reduce the windward area all features have rewarded national patent.