Design Optimisation and Comparison of Non-overlap Winding PM Wind Generators for Active and Passive Battery Charging Systems

In this paper a comparative study of a small-scale turbine-specific designed non-overlap winding permanent magnet (PM) synchronous wind generator for passive- and active battery charging system is done. The comparative study is based on the optimum designs of the generators with the same power and efficiency performance. Both wind generator systems are described and the methods used in the design optimisation process to generate sufficient performance are discussed. The main comparisons between the generators are the active mass and PM mass. It is shown amongst others that the generator for the widely-industry-used passive system uses more than three times the amount of magnet material than the generator for the active system.