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Rationality research of the adjustment law for the blade pitch angle of H-type vertical-axis wind turbines

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  • Zhang, Lijun
  • Gu, Jiawei
  • Zhu, Huaibao
  • Hu, Kuoliang
  • Li, Xiang
  • Jiao, Liuyang
  • Miao, Junjie
  • Liu, Jing
  • Wang, Zhiwei

Abstract

Pitch angle greatly affects the performance of VAWT. Aiming at the maximum value of CT, this study first obtains the theoretical optimal angles of attack, i.e., 17.7° and −18.4° in upwind and downwind zones. A 2.5D model is simulated using Fluent to determine the magnitude and direction of induced velocity, and an initial pitch angle adjustment law is obtained combining the proposed local TSR. Compared with a prototype wind turbine, CP is increased by 2.69% after applying the initial adjustment law. The fitting curve angle δ at the abrupt part of pitch angle is analyzed. The smaller the angle δ is, the more evident the performance improvement of VAWT becomes. CP is increased by 11.68% when the angle is δ = 0°. On this basis, the adjustment law corresponding to δ = 0° of 100°

Suggested Citation

  • Zhang, Lijun & Gu, Jiawei & Zhu, Huaibao & Hu, Kuoliang & Li, Xiang & Jiao, Liuyang & Miao, Junjie & Liu, Jing & Wang, Zhiwei, 2021. "Rationality research of the adjustment law for the blade pitch angle of H-type vertical-axis wind turbines," Renewable Energy, Elsevier, vol. 167(C), pages 484-496.
    • Handle: RePEc:eee:renene:v:167:y:2021:i:c:p:484-496
    DOI: 10.1016/j.renene.2020.11.104
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    1. Zhang, Qiang & Bashir, Musa & Miao, Weipao & Liu, Qingsong & Li, Chun & Yue, Minnan & Wang, Peilin, 2023. "Aerodynamic analysis of a novel pitch control strategy and parameter combination for vertical axis wind turbines," Renewable Energy, Elsevier, vol. 216(C).

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