| 摘要 |
A vertical axis wind turbine 1 comprises at least three blades / vanes 5 rotatably mounted onto a rotor, each blade 5 having a coupling mechanism 6 to control the position of the blade relative to the rotor, the coupling mechanism able to align each blade parallel to the direction of the wind T when the blade is moving against the direction of the wind so as to minimize air resistance. The cyclic control of the wind motor may be achieved either by servo motors (part 8, fig.3), or electromagnetic switches 7 which lock and release the blades at different positions of rotor rotation. Ideally, the electromagnetic switches (eg., solenoids) are located within shafts 6 of each blade, and preferably inside both ends of the shaft 6. Preferably the servos / switches position the blades depending on the direction of the wind, which is indicated by sensors. |
