The Study of Structural Dynamic Response of Wind Turbine Blades under Different Inflow Conditions for the Novel Variable-Pitch Wind Turbine

Daorina Bao (), Aoxiang Jiang, Chengze Li, Zhongyu Shi, Qingsong Han, Yongshui Luo and Shaohua Zhang
Additional contact information
Daorina Bao: School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010010, China
Aoxiang Jiang: School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010010, China
Chengze Li: School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010010, China
Zhongyu Shi: School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010010, China
Qingsong Han: School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010010, China
Yongshui Luo: Yunda Energy Technology Group Co., Ltd., Hangzhou 311106, China
Shaohua Zhang: Inner Mongolia Hengdong Group Huilong Coal Co., Ltd., Hohhot 010010, China

Energies, 2024, vol. 17, issue 16, 1-22

Abstract: To ensure the safe and stable operation of small and medium-sized wind turbine generators within distributed energy systems, a new active pitch adjustment method for a 1.5 kW distributed pitch wind turbine generator is proposed in this article. The stress and displacement responses of blades under uniform inflow and extreme operating gust inflow conditions were calculated and analyzed using a two-way fluid–structure coupling method. The results showed that under the two different flow conditions, as the pitch angle increased, the stress and displacement responses of the wind turbine blades both significantly decreased, and the decrease was greater with increasing wind speed. The feasibility of the proposed variable-pitch adjustment for blade load reduction under different inflow conditions was further illustrated. The peak of the blade stress response was located at the leading-edge position in the middle of the blades (0.55R) for the different inflow conditions, while the displacement response of the blades was mainly along the waving direction. Through comparative analysis of the blade stress and displacement responses at the same wind speed under different flow conditions, it was found that the maximum mean ratio of the blade displacement and stress responses reached 1.66 and 1.67, respectively.

Keywords: horizontal axis wind turbine; wind speed variation; pitch mechanism; structural dynamics (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: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/16/4057/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/16/4057/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2024:i:16:p:4057-:d:1457144

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().