Comparative analysis of the claw-pole rotor dimensions influence on the performances of a claw -pole generator for wind applications

In small ratings, direct-driven wind power applications multiple permanent magnet generators have become very attractive. Connected directly to the turbine axis, this type of electrical machine contributes to low price energy (the energy loss is diminished through the conversion, the turbine performance is increased) and to the reduction of the noise - this would be a very important aspect in case the turbine is placed nearby the localities. The present paper approached the magnetic field analysis of a claw pole permanent magnet rotor topology for a synchronous machine, suitable for small wind power application, by means of the 3D finite elements method.