Optimal design of a radial flux spoke-type interior rotor permanent magnet generator for micro-wind turbine applications

This paper approaches the electromagnetic design and finite-element analysis of a radial flux NdFeB permanent magnet synchronous machine for use as direct-driven generator with low speed micro-wind turbines. The design evaluation of the radial-flux spoke-type permanent magnet (RFPM) generator, based on 2-D and 3-D finite element field analysis, proves that this topology represents a good-performance and cost-effective and could be the machine of choice in grid-connected or stand-alone small-scale wind energy conversion systems.