Comparison of Optimized Fault-Tolerant Modular Stator Machines with U-shape and H-shape Core Structure
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IEEE ECCE2021, Energy Conversion Congress and Expo, Vancouver, Canada
This paper presents a comparison of optimized tooth-coil-winding modular permanent-magnet synchronous machines (TCW-MPMSMs) with H-shape and U-shape stator segments for fault-tolerance applications. Four optimization objectives are studied by means of a Particle-Swarm-Optimization (PSO) based routine: maximum rated torque, minimum torque ripple, maximum efficiency, and minimum mutual inductance. Two 22-pole and 24-slot TCW-MPMSMs with H-shape and Ushape stator cores were evaluated and optimized aiming to optimize each objective. From the results, it was found that Ushape machines are suitable for high-torque and low-mutualinductance requirements, crucial in fault-tolerant applications, whilst H-shape machines offer low ripple torque and slightly lower performance indices for fault-tolerance applications.