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Design and Comparison of Air-Core and High-Power-DensitySynchronous Machines for Hybrid Electric Aircraft.

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Title: Design and Comparison of Air-Core and High-Power-DensitySynchronous Machines for Hybrid Electric Aircraft.
Authors: Perilli, Lorenzo1 (AUTHOR) lorenzo.perilli@polito.it, Credo, Andrea2 (AUTHOR), Fabri, Giuseppe1,2 (AUTHOR), Graffeo, Federica1,2 (AUTHOR), Tenconi, Alberto1 (AUTHOR), Vaschetto, Silvio1 (AUTHOR)
Source: Energies (19961073). Apr2026, Vol. 19 Issue 7, p1673. 27p.
Subject Terms: *Synchronous generators, *Electric generators, *Hybrid electric airplanes, *Synchronous electric motors, *Superconducting coils, *Permanent magnet motors
Abstract: The increasing demand for electric power in hybrid electric aircraft platforms prompts the development of multi-megawatt generators featuring high specific power, compactness and intrinsic fault tolerance. Air-core machines constitute a promising solution to overcome the magnetic saturation and mass limitations of conventional iron-core designs. This paper presents a comparative electromagnetic design study of two air-core synchronous generator topologies for aircraft applications, namely a permanent magnet machine with a Halbach array rotor and an electrically excited synchronous machine featuring a high-temperature superconducting field winding. Both the generators are designed for identical output and adopt a double three-phase stator winding to enhance safety and redundancy. The Halbach array machine is used as the reference configuration representative of a technologically mature solution, whereas the superconducting generator targets high magnetic loadings by means of the superconducting excitation, to minimize the active volume. The solutions proposed in this paper are developed in the frame of a national (Italian) research project dedicated to the study of stages of multi-megawatt fault-tolerant aircraft generators. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 192959077
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PubTypeId: academicJournal
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  Label: Title
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  Data: Design and Comparison of Air-Core and High-Power-DensitySynchronous Machines for Hybrid Electric Aircraft.
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  Data: <searchLink fieldCode="AR" term="%22Perilli%2C+Lorenzo%22">Perilli, Lorenzo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lorenzo.perilli@polito.it</i><br /><searchLink fieldCode="AR" term="%22Credo%2C+Andrea%22">Credo, Andrea</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fabri%2C+Giuseppe%22">Fabri, Giuseppe</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Graffeo%2C+Federica%22">Graffeo, Federica</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tenconi%2C+Alberto%22">Tenconi, Alberto</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vaschetto%2C+Silvio%22">Vaschetto, Silvio</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Apr2026, Vol. 19 Issue 7, p1673. 27p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Synchronous+generators%22">Synchronous generators</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+generators%22">Electric generators</searchLink><br />*<searchLink fieldCode="DE" term="%22Hybrid+electric+airplanes%22">Hybrid electric airplanes</searchLink><br />*<searchLink fieldCode="DE" term="%22Synchronous+electric+motors%22">Synchronous electric motors</searchLink><br />*<searchLink fieldCode="DE" term="%22Superconducting+coils%22">Superconducting coils</searchLink><br />*<searchLink fieldCode="DE" term="%22Permanent+magnet+motors%22">Permanent magnet motors</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The increasing demand for electric power in hybrid electric aircraft platforms prompts the development of multi-megawatt generators featuring high specific power, compactness and intrinsic fault tolerance. Air-core machines constitute a promising solution to overcome the magnetic saturation and mass limitations of conventional iron-core designs. This paper presents a comparative electromagnetic design study of two air-core synchronous generator topologies for aircraft applications, namely a permanent magnet machine with a Halbach array rotor and an electrically excited synchronous machine featuring a high-temperature superconducting field winding. Both the generators are designed for identical output and adopt a double three-phase stator winding to enhance safety and redundancy. The Halbach array machine is used as the reference configuration representative of a technologically mature solution, whereas the superconducting generator targets high magnetic loadings by means of the superconducting excitation, to minimize the active volume. The solutions proposed in this paper are developed in the frame of a national (Italian) research project dedicated to the study of stages of multi-megawatt fault-tolerant aircraft generators. [ABSTRACT FROM AUTHOR]
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        Value: 10.3390/en19071673
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 27
        StartPage: 1673
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      – SubjectFull: Synchronous generators
        Type: general
      – SubjectFull: Electric generators
        Type: general
      – SubjectFull: Hybrid electric airplanes
        Type: general
      – SubjectFull: Synchronous electric motors
        Type: general
      – SubjectFull: Superconducting coils
        Type: general
      – SubjectFull: Permanent magnet motors
        Type: general
    Titles:
      – TitleFull: Design and Comparison of Air-Core and High-Power-DensitySynchronous Machines for Hybrid Electric Aircraft.
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            NameFull: Tenconi, Alberto
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            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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              Value: 19
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            – TitleFull: Energies (19961073)
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