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A comprehensive study on electromagnetic torque and rotor UMP based on an improved 3D static air-gap eccentricity model.

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Title: A comprehensive study on electromagnetic torque and rotor UMP based on an improved 3D static air-gap eccentricity model.
Authors: Xu, Ming-Xing1 (AUTHOR), He, Yu-Ling1,2,3 (AUTHOR), Zhang, Wen1 (AUTHOR) zhangwenzwz@126.com, Dai, De-Rui1 (AUTHOR), Fu, Zi-Xiang1 (AUTHOR), Xue, Rui1 (AUTHOR), Liu, Zhen-Hua1 (AUTHOR), Pang, Zi-Wang1 (AUTHOR), Gerada, David4 (AUTHOR)
Source: Alexandria Engineering Journal. Oct2024, Vol. 105, p370-380. 11p.
Subjects: Magnetic flux density, Rotor vibration, Finite element method, Eccentrics (Machinery), Torque, Synchronous generators
Abstract: Static air-gap eccentricity (SAGE) is a common fault in generators. Current researches primarily focus on the parallel SAGE types, while the inclined static air-gap eccentricity (ISAGE) has been rarely investigated. This paper proposes an improved air-gap eccentricity model and presents a study on the electromagnetic-mechanical properties in synchronous generators under typical ISAGE running conditions. Such electromagnetic-mechanical properties include not only the magnetic flux density (MFD) variations, but also the mechanical responses of the electromagnetic torque (EMT) and rotor unbalanced magnetic pulls (UMP). The typical ISAGE factors include: 1) a varied rotor inclined angle θ , and 2) different values of axial inclined distance z (indicates the offset combination case of the two rotor ends). This work is based on the MFD analysis calculation. Theoretical analysis, finite element analysis, and experimental study are carried out, respectively, by taking a 5 kVA two-pole prototype generator as the study object. It is shown that the electromagnetic-mechanical properties of the generator will change when the inclined eccentricity occurs. The EMT, and the rotor UMP as well as the vibrations will increase as the rotor inclined θ and z increase. Specifically, the 2nd harmonic has the most significant variation. [ABSTRACT FROM AUTHOR]
Copyright of Alexandria Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
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Header DbId: egs
DbLabel: Engineering Source
An: 180114592
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: A comprehensive study on electromagnetic torque and rotor UMP based on an improved 3D static air-gap eccentricity model.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Xu%2C+Ming-Xing%22">Xu, Ming-Xing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Yu-Ling%22">He, Yu-Ling</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Wen%22">Zhang, Wen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangwenzwz@126.com</i><br /><searchLink fieldCode="AR" term="%22Dai%2C+De-Rui%22">Dai, De-Rui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fu%2C+Zi-Xiang%22">Fu, Zi-Xiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xue%2C+Rui%22">Xue, Rui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Zhen-Hua%22">Liu, Zhen-Hua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pang%2C+Zi-Wang%22">Pang, Zi-Wang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gerada%2C+David%22">Gerada, David</searchLink><relatesTo>4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Alexandria+Engineering+Journal%22">Alexandria Engineering Journal</searchLink>. Oct2024, Vol. 105, p370-380. 11p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Magnetic+flux+density%22">Magnetic flux density</searchLink><br /><searchLink fieldCode="DE" term="%22Rotor+vibration%22">Rotor vibration</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Eccentrics+%28Machinery%29%22">Eccentrics (Machinery)</searchLink><br /><searchLink fieldCode="DE" term="%22Torque%22">Torque</searchLink><br /><searchLink fieldCode="DE" term="%22Synchronous+generators%22">Synchronous generators</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Static air-gap eccentricity (SAGE) is a common fault in generators. Current researches primarily focus on the parallel SAGE types, while the inclined static air-gap eccentricity (ISAGE) has been rarely investigated. This paper proposes an improved air-gap eccentricity model and presents a study on the electromagnetic-mechanical properties in synchronous generators under typical ISAGE running conditions. Such electromagnetic-mechanical properties include not only the magnetic flux density (MFD) variations, but also the mechanical responses of the electromagnetic torque (EMT) and rotor unbalanced magnetic pulls (UMP). The typical ISAGE factors include: 1) a varied rotor inclined angle θ , and 2) different values of axial inclined distance z (indicates the offset combination case of the two rotor ends). This work is based on the MFD analysis calculation. Theoretical analysis, finite element analysis, and experimental study are carried out, respectively, by taking a 5 kVA two-pole prototype generator as the study object. It is shown that the electromagnetic-mechanical properties of the generator will change when the inclined eccentricity occurs. The EMT, and the rotor UMP as well as the vibrations will increase as the rotor inclined θ and z increase. Specifically, the 2nd harmonic has the most significant variation. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Alexandria Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.aej.2024.06.088
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 370
    Subjects:
      – SubjectFull: Magnetic flux density
        Type: general
      – SubjectFull: Rotor vibration
        Type: general
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Eccentrics (Machinery)
        Type: general
      – SubjectFull: Torque
        Type: general
      – SubjectFull: Synchronous generators
        Type: general
    Titles:
      – TitleFull: A comprehensive study on electromagnetic torque and rotor UMP based on an improved 3D static air-gap eccentricity model.
        Type: main
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            NameFull: Xu, Ming-Xing
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            NameFull: He, Yu-Ling
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            NameFull: Zhang, Wen
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            NameFull: Dai, De-Rui
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            NameFull: Fu, Zi-Xiang
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            – D: 15
              M: 10
              Text: Oct2024
              Type: published
              Y: 2024
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              Value: 105
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