Amazon.com : 600W Permanent Magnet Generator, 3 Phase Gearless 48V Low Rpm Generator, Rare Earth NdFeB AC Alternator Generators, with Base Use for Wind Turbine and Water Turbine 500 r/min(with Rectifier 48V ) :
Arrangement of magnets in a wind turbine setup. | Download Scientific Diagram
Overview of Straight Drive Wind Turbine | Direct Drive Wind Turbine | Pengky