Construction of wind plants in coastal regions - suspending Magnus rotor by ball joint from four-limbed support structure

摘要

The wind generator, consists of a Magnus rotor, supported on a non-rotating axis which, in turn, is held by four steel pillars. The centre axis of the rotor has a ball-shaped upper end, which may be fixed with or without bearings in a cup-shaped recess at the top of the supporting structure. The latter is strong enough to withstand large pressures and storm forces without oscillating or deflecting. The rotor itself is made from steel sheet or polyester with glass fibre reinforcement. The extension of the central axis at ground level is let into a notch which has reinforced side walls, in order to transfer the rotation of the axis due to precession, to the generator. Thus, the base of the central axis can slide into the centre or the periphery of the disc, depending on the prevailing wind pressure. By using a Magnus rotor, and building the wind generator on the coast on high ground, a cheaper installation with a higher efficiency than a conventional wind propeller, can be produced.