Abstract An integrated floating energy system consisting of different types of energy devices is an ideal option for reducing the levelized cost of energy by enhancing the power production capacity. This study proposes a concept of an integrated energy system by combining two tidal turbines with a floating wind turbine. In order to investigate the power performance and dynamic responses of the hybrid concept, a novel coupled aero-hydro-servo-elastic tool is developed based on a commercial hydrodynamic analysis software package. In addition, a torque-pitch controller and the AeroDyn module are integrated within the coupled tool for evaluating the power performance of the tidal turbines under dynamic inflow conditions. Experimental data and numerical results obtained by OpenFAST are used to verify the accuracy of the coupled tool in predicting dynamic responses of the integrated energy system. The dynamic responses and power production under different environmental conditions are obtained by conducting a series of simulations. The results indicate that the total power production is increased by 3.84% to 6.46%. The transient behavior of the platform is improved and the tension fluctuation in mooring lines are significantly reduced by the hydrodynamic damping provided by the tidal turbines. In addition, the tidal turbines have no negative influences on the aero-elastic responses and power performance of the wind energy system. The results have demonstrated the advantages of the integrated energy system in enhancing the power production and improving the dynamic performance.

中文翻译：

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基于耦合分析的综合漂浮能源系统性能评价

摘要 由不同类型能源装置组成的一体化浮动能源系统是提高电力生产能力、降低能源平准化成本的理想选择。本研究提出了一个通过将两个潮汐涡轮机与一个浮动风力涡轮机相结合的综合能源系统的概念。为了研究混合动力概念的动力性能和动态响应，基于商业水动力分析软件包开发了一种新型的气动-液压-伺服-弹性耦合工具。此外，扭矩-桨距控制器和 AeroDyn 模块集成在耦合工具中，用于评估动态流入条件下潮汐涡轮机的功率性能。OpenFAST获得的实验数据和数值结果用于验证耦合工具在预测综合能源系统动态响应方面的准确性。通过进行一系列模拟，获得了不同环境条件下的动态响应和发电量。结果表明，总发电量增加了 3.84% 至 6.46%。潮汐涡轮机提供的流体动力阻尼改善了平台的瞬态行为，并显着降低了系泊缆绳的张力波动。此外，潮汐涡轮机对风能系统的气动弹性响应和功率性能没有负面影响。