基于风和波浪的伴生关系及波浪能与风能同时获取的可行性,提出一种基于半潜式风力机与点吸收式波能装置的新型风浪联合获能系统。建立考虑等效（PTO）的全过程风-浪-多体耦合时域分析模型,并研究波能装置设计参数对波浪能输出功率的影响规律,重点研究风浪联合运行海况下新型风浪联合获能系统的结构动力响应特征与获能特性。结果表明,波能装置的安装对平台纵荡运动和系泊系统产生不利影响,对风力涡轮机的影响较小,此外垂荡和纵摇响应均随波能装置的加入得到抑制,纵摇角平均值减小25%,垂荡位移标准差减小42%,与漂浮式风力机相比,联合获能系统的平均输出功率增加17%。
Abstract
According to the companion relationship between marine wind and wave resources, it is extremely feasible to harvest wind and wave energy simultaneously. Based on this, a novel combined wind-wave energy harvesting system with a semi-submersible wind turbine and point absorption wave energy converter（WEC） is proposed. A fully-coupled wind-wave-multi body time domain analysis model considering equivalent PTO （power take-off） is developed in this work. The influence law of wave energy converter parameters on power performance is investigated, focusing on the structural dynamic response characteristics and energy acquisition characteristics of the novel system under a hybrid wind-wave operation sea state. The results show that the installation of the wave energy converter adversely affects the surge motion of the semi-submersible platform and the mooring lines, but has less impact on the wind turbine. In addition, both the heave and pitch responses of the platform are suppressed with the addition of the wave energy converter, the average pitch angle is reduced by 25%, the standard deviation of the heave motion is reduced by 42%, and the average power of the combined system is increased by 17% compared with the single floating wind turbine.
关键词
波浪能转换 /
海上风电 /
时域分析 /
动力响应 /
获能特性 /
联合获能系统
Key words
wave energy conversion /
offshore wind power /
time domain analysis /
dynamic response /
energy-acquiring characteristics /
combined energy harvesting system
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基金
国家自然科学基金（52271297）; 山东省自然科学基金（ZR2022ME002; ZR2021ZD23）; 中国工程院战略研究与咨询项目（2022-DFZD-36）
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