Fourier-Based Modeling of a Slotless Hybrid Homopolar Radial Magnetic Bearing with Passive Axial Stabilization

Boulanger, François;Bosschaert, Sébastien;Colinet, Guillaume;Dehez, Bruno
(2023) 2023 IEEE Energy Conversion Congress and Exposition (ECCE) — p. 4120-4116 (2023)

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Fourier-Based_Modeling_of_a_Slotless_Hybrid_Homopolar_Radial_Magnetic_Bearing_with_Passive_Axial_Stabilization.pdf
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Abstract
Among active magnetic bearings (AMB), homopolar hybrid AMB (HH-AMB) generate a homopolar bias magnetic field using permanent magnets (PM) to reduce Joule and iron losses. The iron losses are further reduced by the slotless topology of the HH-AMB (SHH-AMB). Analytical models of the topology have been implemented using magnetic equivalent circuit (MEC) and Fourier-based (FB) methods. This paper proposes a FB model of a variant of the SHH-AMB topology that has additional saliencies on the rotor to provide an axial stabilization. The validity of the results is assessed with a finite element analysis (FEA) and experimentally, with measurements performed on a prototype of the bearing under study.
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Boulanger, F., Bosschaert, S., Colinet, G., & Dehez, B. (2023). Fourier-Based Modeling of a Slotless Hybrid Homopolar Radial Magnetic Bearing with Passive Axial Stabilization. 2023 IEEE Energy Conversion Congress and Exposition (ECCE), 4120-4116. https://doi.org/10.1109/ECCE53617.2023.10362844 (Original work published 2023)