| 摘要 |
A wind turbine assembly includes aerofoil blades 10 secured to a shaft 12 mounted for rotation about a vertical axis relative to stationary supporting structure 32 of the assembly. The supporting structure includes recesses 30 into which the upper and lower ends 22, 24 of the shaft project. First and second magnets 25, 27 of the same polarity are positioned along each side of each recess and along the sides of the shaft which project into the recesses. In use, the shaft levitates due to the repelling forces of the magnets. An electricity generator is provided in the form of a coil (40, fig 2) secured to the stationary structure and positioned between one of the aforesaid magnets and a third magnet 38 of opposite polarity. The ends of the shaft are preferably generally conical and may have a lesser inclined shoulder 16, with the recess being complimentary. |
