Abstract
In this paper, first, the distribution of electromagnetic loss of the proposed doubly salient electromagnetic generator (DSEG) with the variation of defined stator yoke width coefficient is analyzed. The design of stator yoke for the proposed DSEG is of great significance to the power density and output efficiency improvement due to the introduction of field winding. By building a 3-D thermal finite element model based on the optimized dimensions and calculated electromagnetic loss, thermal performance of the proposed DSEG is predicted to ensure the maximum temperature rise in the safe range. The impact of current density on thermal performance is studied as well. Finally, a totally enclosed self-cooling prototype DSEG has been developed and tested. Experimental results confirm the validity of the proposed DSEG with optimized stator yoke for a stand-alone power system application.
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