A compact low-velocity ocean current energy harvester (LOCH) is developed to power undersea instrument platforms for long-term scientific seafloor observation. Noncontact magnetic couplings are used in the LOCH to eliminate friction and achieve reliable underwater sealing so that the LOCH can adapt the low-velocity ocean current and its energy transmission efficiency can be improved. The parameters of the magnetic couplings are optimized by the three-dimensional finite-element method (3D FEM). A laboratory experiment platform is designed; and the static and dynamic performances of the magnetic couplings with different parameters are tested. The experiment results are compared with computer simulations to verify the optimal parameter design. Finally; a prototype of the LOCH is designed and its underwater experiment proves that it can start smoothly and work stably at a current velocity of as low as 0.4 m/s

中文翻译：

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紧凑型低速洋流能量采集器，采用磁耦合技术进行长期科学海底观测

开发了紧凑型低速洋流能量采集器（LOCH），可为海底仪器平台提供动力，以进行长期科学海底观测。LOCH中使用非接触式磁耦合来消除摩擦并实现可靠的水下密封，因此LOCH可以适应低速海流，并可以提高其能量传输效率。磁耦合的参数通过三维有限元方法（3D FEM）进行了优化。设计了实验室实验平台；并测试了不同参数的磁性联轴器的静态和动态性能。将实验结果与计算机仿真进行比较，以验证最佳参数设计。最后;