一种考虑载荷影响的风力机MPPT加速最优转矩法
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国家重点研发计划资助项目(2023YFB4204700)


An accelerated optimal torque method for wind turbine MPPT considering drive-train load
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    摘要:

    一类改进的最优转矩(optimal torque, OT)法通过扩大风力机最大功率点跟踪(maximum power point tracking, MPPT)过程中的不平衡转矩来提升转速跟踪能力,进而捕获更多风能。然而,此类方法在提高风能捕获效率的同时会造成电磁转矩的频繁波动,导致风力机传动链载荷显著提升。针对这一问题,文中研究发现在风速变化下补偿转矩引起的额外电磁转矩波动是产生上述现象的主要原因。为此,文中提出一种考虑载荷影响的风力机加速OT法,在风速变化时通过利用恒转矩过渡阶段抑制额外的电磁转矩波动,提升MPPT过程中的转速跟踪能力,从而实现在提升风力机风能捕获效率的同时尽可能避免载荷增大。最后,仿真结果验证表明,文中所提加速OT法不仅可以提升不同风况下的风能捕获效率,而且能够有效抑制传动链载荷的上升。

    Abstract:

    A class of improved methods for optimal torque (OT) control enhances the tracking ability of wind turbines, and thus wind energy capture, by expanding unbalanced torque during maximum power point tracking (MPPT). However, these methods cause frequent fluctuations in electromagnetic torque, leading to a significant increase in drive-train loads of wind turbines. It is found that torque compensation under wind speed variation causes additional electromagnetic torque fluctuations, which is the main reason for the above problem. To address this, an accelerated OT control method for wind turbines considering load effects is proposed in this paper. It suppresses additional electromagnetic torque fluctuations by utilizing a constant torque transition phase during wind speed variation. At the same time, it improves tracking capability during MPPT. This enhances the wind energy capture efficiency of wind turbines while avoiding load increase as much as possible. Finally, the simulation results show that the proposed method significantly improves wind energy capture efficiency under various wind conditions and effectively suppresses the rise of drive-train loads.

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杨雪琪,宋丹丹,陈载宇,李阳.一种考虑载荷影响的风力机MPPT加速最优转矩法[J].电力工程技术,2026,45(4):34-40. YANG Xueqi, SONG Dandan, CHEN Zaiyu, LI Yang. An accelerated optimal torque method for wind turbine MPPT considering drive-train load[J]. Electric Power Engineering Technology,2026,45(4):34-40.

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历史
  • 收稿日期:2025-08-27
  • 最后修改日期:2025-11-14
  • 在线发布日期: 2026-04-15
  • 出版日期: 2026-04-28
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