access icon openaccess Optimal segmented rotor design for the embedded electrical machine for the more electric aircraft

This study presents the design and analysis of the segmented rotor design for an electrical machine embedded onto the more electric aircraft gas turbine engine shaft. The high-speed operational environment imposes high stress levels due to centrifugal forces; thus, the feasibility of this segmented rotor topology for such application is explored and a suitable design is proposed to overcome mechanical stresses. Finite element structural analysis was performed to compare the mechanical behaviour of a different rotor segment fixing structure and the proposed design. Also, electromagnetic analysis is carried out on a high-speed switched reluctance machine to study the impact of a new design on machine electromagnetic performance.

Inspec keywords: shafts; aerospace engines; reluctance machines; gas turbines; rotors; finite element analysis

Other keywords: machine electromagnetic performance; mechanical behaviour; finite element structural analysis; high stress levels; electric aircraft gas turbine engine shaft; centrifugal forces; suitable design; different rotor segment; embedded electrical machine; segmented rotor design; reluctance machine; segmented rotor topology; electromagnetic analysis; high-speed operational environment

Subjects: Synchronous machines; Finite element analysis; Optimisation techniques; Numerical analysis; Mechanical components

References

    1. 1)
      • 7. Nandish, R.V., Paul Vizhian, S., Gopinath, M., et al: ‘Elastic contact stress analysis of dovetail attachment in turbine engines’, Int. J. Res. Mech. Eng. Technol., 2013, 3, (2), pp. 166170.
    2. 2)
      • 4. Mecrow, B.C., El-Kharashi, E.A., Finch, J.W., et al: ‘Segmental rotor switched reluctance motors with single-tooth windings’, IEE Proc., Electr. Power Appl., 2003, 150, (5), pp. 591599.
    3. 3)
      • 1. Provost, M.J.: ‘The more electric aero-engine: a general overview from an engine manufacturer’. Int. Conf. on Power Electronics, Machines and Drives (Conf. Publ. No. 487), Sante Fe, NM, USA, 2002, pp. 246251.
    4. 4)
      • 9. Inconel 718 Technical Data, High Temp Metals Inc..
    5. 5)
      • 3. Mecrow, B.C., El-Kharashi, E.A., Finch, J.W., et al: ‘Preliminary performance evaluation of switched reluctance motors with segmental rotors’, IEEE Trans. Energy Convers., 2004, 19, (4), pp. 679686.
    6. 6)
      • 2. Mecrow, B.C., Finch, J.W., El-Kharashi, E.A., et al: ‘Switched reluctance motors with segmental rotors’, IEE Proc., Electr. Power Appl., 2002, 149, (4), pp. 245254.
    7. 7)
      • 5. Hall, R., Jack, A.G., Mecrow, B.C., et al: ‘Design and initial testing of an outer rotating segmented rotor switched reluctance machine for an aero-engine shaft-line-embedded starter/generator’. IEEE Int. Conf. on Electric Machines and Drives, San Antonio, TX, 2005, pp. 18701877.
    8. 8)
      • 6. Harman, R.T.C.: ‘Gas turbine engineering’ (The MacMillan Press, London and Basingstoke, 1981).
    9. 9)
      • 10. Vacodur S Plus, Soft Magnetic Cobalt-Iron Alloys - Vacoflux and Vacodur, Vacuumschmelze GmbH & Co. KG.
    10. 10)
      • 8. Widmer, J.D.: ‘Segmental rotor switched reluctance machines for use in automotive traction’, PhD Thesis, Newcastle University, 2013.
http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2018.8192
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