Preliminary design and analysis of a high speed permanent magnets synchronous generator

Micro-turbine based high speed gensets exhibit several interesting features such as compactness and light weight, low maintenance, fuel flexibility, relatively low emissions, durability, high reliability etc. They represent an interesting solution in the distributed generation perspective, especially when employed as mid-low power co-generation units possibly exploiting byproducts of farming activities. This paper presents the preliminary design and FEM/circuital analysis of a high-speed permanent magnets synchronous brushless machine useable as generator in such units. Results concerning different operative conditions and current waveforms are reported and commented, considering the opportunity to employ a controlled AC/DC converter in spite of the usual diodes rectifier bridge.