Analytical Sizing of Radial Flux Hybrid Excitation Synchronous Machines

This paper presents a sizing equation system for radial flux (RF) hybrid excitation synchronous machines (HESMs) with coaxial rotors. The system of sizing equations is derived integrating existing literature, mechanical, magnetic, thermal and control strategy considerations and coupled to a computationally-efficient finite element analysis (FEA) to assist the design of wide constant power speed range (CPSR) HESMs.