Topology Optimization in Three-Phase C-Core SRMs

TL;DR

This paper presents an optimized three-phase C-core switched reluctance motor design that enhances torque density and reduces core loss, validated through simulation and experimental testing.

Contribution

It introduces a novel topology optimization for C-core SRMs, improving torque density and efficiency over conventional designs.

Findings

Higher torque density achieved

Reduced core loss demonstrated

Good agreement between simulation and experiments

Abstract

This paper investigates the optimized combination of rotor and stator teeth in a three-phase switched reluctance motor featuring a connected C-core topology to attain a larger winding area and, thus, a higher electrical loading capability, leading to a higher torque density. The general formulation is discussed. Additionally, the shorter flux path within the design leads to a reduced core loss. The finite element method is employed in the design and field analysis. A comparison with a conventional motor shows the superiority of the proposed configuration. The optimized design is prototyped and tested. Both static and dynamic torques are extracted. A good correlation between simulation and experimental results is observed.