Influence of Outer Diameter-to-Axial Length Ratio on Torque Density in an Axial Wound Field Flux Switching Motor with Segmental Rotors
Year: 2025
Type: article
Abstract: Downsizing and weight reduction of motors are critical in aircraft applications. This paper investigates the effect of the lengthto-diameter ratio (L/D) on the torque density of an axial wound field flux switching motor (AWFFSM) with segmental rotors. The torque density is analyzed for L/D values ranging from 0.106 to 0.312, while maintaining a constant motor volume. The results show that the motor achieves the highest torque-to-volume density at L/D = 0.156 and the highest torque-to-weight density at L/D= 0.127. Furthermore, the motor weight decreases as the design becomes flatter. These findings provide useful insights for guiding the downsizing and weight optimization of AWFFSMs.
Authors: Yudai Koishi, Hiroki Goto
Institution: Utsunomiya University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4416436304