A Transverse Flux Permanent Magnet machine for micro-wind generation application

A new Transverse Flux Permanent Magnet (TFPM) generator topology is proposed for direct-drive wind turbine application. The peculiarity of TFPM machines is their high torque density, and attention is mainly focused on their configuration at concentrated flux. The main objective is to find an innovative structure for simplification of the constructive process with consequently reduced production costs. Many magnetic circuit topologies for TFPM were considered. A new design is analyzed, starting from a general configuration and demonstrating that more constructive complexity can have higher torque density without increasing current density and the magnetic air-gap. Design of the TFPM is explained and detailed, and a final validation by means of FEM analysis is done and the results discussed.