Electromagnetic Analysis and Comparative Study of Surface-Mounted and Consequent Pole Axial Flux Permanent Magnet Machines
Year: 2024
Type: article
Abstract: This research presents a comparative analysis of single-sided surface-mounted axial flux permanent magnet (SMAFPM) and consequent-pole axial flux permanent magnet (CPAFPM) machines by evaluating various key electromagnetic parameters. A straightforward replacement of permanent magnets (PMs) with soft magnetic composites (SMCs) is proposed for a conversion of surface-mounted (SM) topology to consequent pole (CP) topology, which maximizes manufacturing ease while sharing the same components. Detailed three-dimensional (3D) finite element analysis (FEA) is performed to assess parameters such as back-EMF, flux-linkage, inductance, torque, and losses. The investigation highlights that despite utilizing 50% less rare-earth permanent magnet (PM) material, the CPAFPM machine produces only 30% less rated torque compared to the SMAFPM machine. However, the CPAFPM machine suffers from reduced magnetic loading and higher armature reaction, leading to 36% lower torque density and reduced efficiency at low speeds and heavy loads. Prototypes of both machines were fabricated, and experimental validation showed a good correlation with the simulation studies. The findings provide insight into the simple conversion to the CPAFPM machine as a viable option for high-speed drives requiring fewer rare-earth PM materials.
Source: IEEE Access
Authors: Rajesh Kumar, Dae Yong Um, Lars Sjöberg, Tushar Batra, Glynn Atkinson
Institutions: Gyeongsang National University, Newcastle University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,995
OpenAlex ID: W4404952647