View in EDS HTML Full Text PDF Full Text

A Study on the Dynamic Response of a Small Wind Turbine Blade.

Saved in:
Bibliographic Details
Title: A Study on the Dynamic Response of a Small Wind Turbine Blade.
Authors: Bao, Daorina1 (AUTHOR), Luo, Shenao1,2 (AUTHOR), Jiang, Aoxiang2,3 (AUTHOR), Luo, Yongshui3,4 (AUTHOR), Chen, Jingsen4,5 (AUTHOR), Guo, Xiaodong1,5 (AUTHOR) guoxiaodong@sztu.edu.cn, Cui, Ruijun1,2 (AUTHOR)
Source: Energies (19961073). May2026, Vol. 19 Issue 10, p2386. 23p.
Subject Terms: *Wind turbine blades, *Structural reliability, *Field research, *Computer simulation, *Unsteady flow, *Wind turbines, *Angle of attack (Aerodynamics)
Abstract: Turbulent wind conditions pose significant challenges to the blade structural reliability of small wind turbines. Different from the authors' previous work, which mainly focused on the output characteristics of the same 5 kW prototype under variable inflow conditions, this study combines field-test observations with numerical simulations to further investigate the blade structural dynamic responses of a 5 kW variable-pitch wind turbine under both uniform inflow and extreme wind conditions. Owing to the unique pitch-regulation mechanism of the proposed turbine, two pitch-control modes, namely conventional power-limited pitch control and active stall pitch control, are comparatively analyzed to clarify their effects on blade load, stress, and displacement responses. The results indicate that, under uniform inflow conditions, stresses are concentrated near the leading edge of the blade mid-span, while the maximum displacement occurs at the blade tip. Both stress and displacement decrease with increasing conventional pitch angle. Under extreme wind conditions, increasing gust intensity causes a nonlinear growth in blade loads and aggravates blade structural response. During active stall pitch control, the load distribution pattern is generally consistent with that under conventional pitch control, whereas the blade structural response first decreases and then increases as the pitch angle is adjusted toward negative values. Under uniform inflow at the rated wind speed of 11 m/s, the blade-tip maximum displacement decreased from 56.51 mm under the +6° power-limited/reference pitch condition to 48.42 mm under the −6° active-stall-related pitch condition, corresponding to a reduction of approximately 14.3%. These results provide a useful reference for the blade structural design and control optimization of distributed small wind turbines under complex inflow conditions. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: enr
DbLabel: Energy & Power Source
An: 194141501
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: A Study on the Dynamic Response of a Small Wind Turbine Blade.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Bao%2C+Daorina%22">Bao, Daorina</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+Shenao%22">Luo, Shenao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Aoxiang%22">Jiang, Aoxiang</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+Yongshui%22">Luo, Yongshui</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Jingsen%22">Chen, Jingsen</searchLink><relatesTo>4,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guo%2C+Xiaodong%22">Guo, Xiaodong</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)<i> guoxiaodong@sztu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Cui%2C+Ruijun%22">Cui, Ruijun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. May2026, Vol. 19 Issue 10, p2386. 23p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Wind+turbine+blades%22">Wind turbine blades</searchLink><br />*<searchLink fieldCode="DE" term="%22Structural+reliability%22">Structural reliability</searchLink><br />*<searchLink fieldCode="DE" term="%22Field+research%22">Field research</searchLink><br />*<searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br />*<searchLink fieldCode="DE" term="%22Unsteady+flow%22">Unsteady flow</searchLink><br />*<searchLink fieldCode="DE" term="%22Wind+turbines%22">Wind turbines</searchLink><br />*<searchLink fieldCode="DE" term="%22Angle+of+attack+%28Aerodynamics%29%22">Angle of attack (Aerodynamics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Turbulent wind conditions pose significant challenges to the blade structural reliability of small wind turbines. Different from the authors' previous work, which mainly focused on the output characteristics of the same 5 kW prototype under variable inflow conditions, this study combines field-test observations with numerical simulations to further investigate the blade structural dynamic responses of a 5 kW variable-pitch wind turbine under both uniform inflow and extreme wind conditions. Owing to the unique pitch-regulation mechanism of the proposed turbine, two pitch-control modes, namely conventional power-limited pitch control and active stall pitch control, are comparatively analyzed to clarify their effects on blade load, stress, and displacement responses. The results indicate that, under uniform inflow conditions, stresses are concentrated near the leading edge of the blade mid-span, while the maximum displacement occurs at the blade tip. Both stress and displacement decrease with increasing conventional pitch angle. Under extreme wind conditions, increasing gust intensity causes a nonlinear growth in blade loads and aggravates blade structural response. During active stall pitch control, the load distribution pattern is generally consistent with that under conventional pitch control, whereas the blade structural response first decreases and then increases as the pitch angle is adjusted toward negative values. Under uniform inflow at the rated wind speed of 11 m/s, the blade-tip maximum displacement decreased from 56.51 mm under the +6° power-limited/reference pitch condition to 48.42 mm under the −6° active-stall-related pitch condition, corresponding to a reduction of approximately 14.3%. These results provide a useful reference for the blade structural design and control optimization of distributed small wind turbines under complex inflow conditions. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=194141501
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/en19102386
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 23
        StartPage: 2386
    Subjects:
      – SubjectFull: Wind turbine blades
        Type: general
      – SubjectFull: Structural reliability
        Type: general
      – SubjectFull: Field research
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Unsteady flow
        Type: general
      – SubjectFull: Wind turbines
        Type: general
      – SubjectFull: Angle of attack (Aerodynamics)
        Type: general
    Titles:
      – TitleFull: A Study on the Dynamic Response of a Small Wind Turbine Blade.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Bao, Daorina
      – PersonEntity:
          Name:
            NameFull: Luo, Shenao
      – PersonEntity:
          Name:
            NameFull: Jiang, Aoxiang
      – PersonEntity:
          Name:
            NameFull: Luo, Yongshui
      – PersonEntity:
          Name:
            NameFull: Chen, Jingsen
      – PersonEntity:
          Name:
            NameFull: Guo, Xiaodong
      – PersonEntity:
          Name:
            NameFull: Cui, Ruijun
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 15
              M: 05
              Text: May2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 19961073
          Numbering:
            – Type: volume
              Value: 19
            – Type: issue
              Value: 10
          Titles:
            – TitleFull: Energies (19961073)
              Type: main
ResultId 1