Analysis and optimization of a double-sided air-cored tubular generator

Abstract

In this paper, the design and development of a double-sided, air-cored tubular generator (DSTG) is presented. The characteristics of air-cored, slot-less structures are investigated in terms of power density and efficiency. This is highly desirable for small and medium-sized renewable energy conversion systems. In this work, an analytical tool based on the magnetic vector potential method is built in order to achieve a fast but accurate method by which to analyze the machine. The analytical model is validated by finite element analysis. Further design improvements, based on the analytical and FE models are then suggested in order to enhance the performance of the DSTG. The final design of the DSTG is validated by test results from a developed prototype of the DSTG.