Radial Magnetic Bearings for Rotor–Shaft Support in Electric Jet Engine

Krzysztof Falkowski, Paulina Kurnyta-Mazurek, Tomasz Szolc and Maciej Henzel
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Krzysztof Falkowski: Faculty of Mechatronics, Armament and Aerospace, Military University of Technology, 00-908 Warsaw, Poland
Paulina Kurnyta-Mazurek: Faculty of Mechatronics, Armament and Aerospace, Military University of Technology, 00-908 Warsaw, Poland
Tomasz Szolc: Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, Poland
Maciej Henzel: Faculty of Mechatronics, Armament and Aerospace, Military University of Technology, 00-908 Warsaw, Poland

Energies, 2022, vol. 15, issue 9, 1-33

Abstract: New technologies are being developed to elaborate cutting-edge electrical jet engines to replace classical constructions. These new concepts consider the possibility of using electrical machines both as starters and generators, as well as suspension systems for the turbine shafts of aircraft engines. The paper will present mathematical analysis regarding active magnetic bearing (AMB) implementation for rotor–shaft support. This technology allows the elimination of friction forces between cooperating kinematic pairs (stator and rotor), reduces the adverse effects of classic bearings, and increases operating speed range and an operational susceptibility. The mathematical and numerical analysis of active magnetic suspension systems are presented. Next, a comparison of the theoretical studies using Comsol Multiphysics software and its experimental verification are described. A discussion regarding the mathematical analysis and experimental effects is also provided. The conclusion summarizes the theoretical and experimental features of heteropolar radial active magnetic bearings in new electric aircraft engines.

Keywords: active magnetic bearings; electric jet engine; current stiffness coefficient; displacement stiffness coefficient (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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