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摘要: 风电是可再生能源的主力军, 在优化能源结构、缓解气候变化方面发挥着重要作用. 经过数十年的发展, 风电装备逐渐向大型化和离岸化方向发展, 并由此形成“由陆向海, 由浅入深, 由固定式向漂浮式”的演变之路. 在水深大于50米的深远海域, 采用漂浮式支撑基础搭载大型或超大型风电机组是兼顾技术可行度和成本优势的理想选择. 如今, 大型漂浮式风机已成为下一代深远海风能大规模开发的主力装备, 是深化海洋风能开发的先导战略性高端装备, 是风电领域的研究热点和技术高地. 本文围绕大型漂浮式风电装备耦合动力学问题, 综述了国内外浮式风电技术的发展历程和研究现状, 结合作者团队多年的研究与实践经验, 介绍了浮式风机耦合动力学及其优化控制中的基础问题与研究现状, 总结了现阶段浮式风机耦合动力学研究中的困难与挑战, 为浮式风电研究人员提供参考.Abstract: Wind power is one of the essential branches of renewable energy resources, and it is playing an important role in innovating energy systems and mitigating global climate change. After decades of development, wind turbines are becoming larger and are advancing into offshore regions. In offshore sites with water depths of more than 50 meters, the Floating Wind Turbine (FWT) is thought to be technically and economically advantaged. Nowadays, the FWT is regarded as one of the most promising alternatives for the future exploitation of offshore wind resources. In this review, the coupling dynamics of FWTs are focused on, and the development of the FWT technology at home and abroad is reviewed. Then the research status of FWT coupling dynamics, as well as its optimization, is introduced and discussed. Finally, the significant difficulties and challenges in studying FWT coupling dynamics are concluded. This review can serve as a guideline for the research in the FWT community.
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Key words:
- floating wind turbine /
- coupling dynamics /
- aerodynamics /
- model test /
- hardware-in-the-loop /
- vibration control
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图 12 大型浮式风机耦合动力学研究内容概览(Micallef & Rezaeiha 2021)
图 13 风机叶片涡系模型示意图(Wen et al. 2019a)
图 14 浮式风机输出功率随等效湍流强度平方变化规律(Wen et al. 2021)
图 15 浮式风机不同状态下的运行模式(Micallef & Rezaeiha 2021)
图 16 平台运动下的浮式风机尾流图 (Tran et al. 2016b)
图 18 叶片结构建模方法. (a)有限元模型(Hu et al. 2016), (b)多体动力学模型(Molenaar 2003), (c)等效梁模型(Branner et al. 2012)
图 21 平台运动/结构振动作用下的叶片翼型相对速度与受力(Liu et al. 2017). (a) 速度扰动与风速同向, (b) 无运动/振动扰动, (c) 运动/振动与风速反向
图 23 浮式风机陀螺力矩的动力响应(陈嘉豪 2018). (a) 平台首摇, (b) 首摇偏航力矩
图 36 单柱式浮式风机及其附属垂荡板结构 (图中红圈) (丁勤卫等 2019)
图 37 张力腿浮式风机串联浮筒优化方法(马哲等 2020)
图 41 结构控制在高层建筑和浮式风机中的应用. (a) 高层建筑, (b)浮式风机(Si et al. 2013)
表 1 四类浮式风机结构型式的基本特点
类型 稳性原理 优点 缺点 单柱式 压载稳定 设计简单, 制造方便
活动部件少, 稳性好限于深水
安装困难
维护不便半潜式 浮力稳定 安装灵活, 费用较低
可达性强, 维修方便质量较大
结构复杂
制造困难张力腿 系泊稳定 结构紧凑, 质量较轻
活动部件少, 稳性好系泊与锚固负载大
安装困难, 成本高驳船式 阻尼稳定 结构简单
定位方便
成本较低吃水浅、重心高
对外界环境较敏感
不适应于恶劣海况表 2 浮式风机动力学求解软件基本情况汇总(段斐 2017)
软件名称 开发机构 气动载荷 水动载荷 系泊载荷 FAST NREL BEM+DS Airy+ME
Airy+PF+MEQSCE HAWC2 Risø+DTU BEM+DS Airy+ME
Airy+PF+MEQSCE, UDFD SIMO MARINTEK BEM Airy+ME QSCE, MBS GH Bladed GH BEM+DS Airy+ME UDFD ADAMS MSC+NREL+LUH BEM+DS Airy+ME
Airy+PF+MEQSCE, UDFD SESAM.DeepC DNV - Airy+ME
Airy+PF+MEQSCE, FEM 3Dfloat IFE-UMB BEM Airy+ME FEM, UDFD BEM: 叶素动量理论 (Blade Element Momentum) ; DS: 动态失速 (Dynamics Stall) ; Airy: 线性波理论; ME: 莫里森公式 (Morison’s Equation) ; PF: 势流理论 (Potential Flow) ; QSCE: 准静态悬链线方程 (Quasi-static Catenary Equations) ; UDFD: 用户自定义力−位移关系 (User-Defined Force-Displacement relationship) ; FEM: 有限元 (Finite Element Method); MBS:多体动力学(Multi-body Dynamics formulation) -
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