Generator configuration for energy generation from natural fluid flow

摘要

The first mechanical member 302 has a plurality of permanent magnets 301 attached thereto so as to define a plurality of magnetic poles. The magnetic poles generate a radial magnetic field that also extends towards the coaxial second member 303. The second member includes a plurality of radially extending teeth that define open slots there between. A respective preformed coil 305 is located over each alternate tooth 306 such that a single coil winding occupies each of said slots and said coil windings generate an electromotive force during the relative rotation. Ratio of slots to poles is between 1.0 and 1.5 and each coil has between 10 and 20 windings. The generator may be wind powered and the arrangement may be such so that contra-rotation of first and second members occurs. The turbine may be mounted on a building 101 and supply power to the same.