Advanced photonics for marine hydrokinetic structural health monitoring

the results of demonstration tests of a full-scale hydrokinetic turbine for river and tidal sites, are presented at the conclusion of the eu-funded crimson project. the turbine features a 3-bladed crossflow, 9.0 m2 capture area rotor, representing one module of the orpc rivgen© technology. a comprehensive matrix of operational trials was performed to characterize the turbine hydrodynamic performance and the efficiency of the power conversion system. an advanced blade structural monitoring system based on fiber-optics strain sensors was implemented and validated. the full-scale turbine tests were carried out at the hydrodynamics testing infrastructure at the institute of marine engineering of the national research council (cnr-inm). this facility, among the largest of its kind globally, provided fully controlled and repeatable conditions that allowed to deliver a high-quality dataset on system performance and reliability, contributing to develope new knowledge for the enhancement of hydrokinetic turbine technology. the results allow orpc to characterize the strain profile precisely over a rotation and to identify the maximum/minimum strain experienced by the foil for every flow condition tested.

本报告详细阐述了欧盟资助的Crimson项目之终期，对一整套全尺寸河流和潮汐地点水力涡轮机演示测试结果进行了呈现。该涡轮机采用三叶片横流设计，配备9.0平方米的捕获面积转子，代表ORPC RivGen©技术的单一模块。为表征涡轮机的流体动力学性能及电力转换系统的效率，进行了全面的操作试验矩阵。实施并验证了一种基于光纤应变传感器的先进叶片结构监测系统。全尺寸涡轮机测试于国家研究委员会海洋工程研究所（CNR-INM）的流体动力学测试基础设施中进行。该设施是全球同类设施中规模最大的之一，提供了完全可控且可重复的环境条件，从而确保了系统性能和可靠性的高质量数据集的生成，有助于开发新的知识，以提升水力涡轮机技术。测试结果使得ORPC能够精确地描绘出叶片在旋转过程中的应变曲线，并识别出在每种测试条件下叶片所经历的极值应变。