针对海洋仪器通常远离海岸线,远离电网,传统的电网供电方式实施难度大、成本高昂的问题,为了满足这一特殊应用需求,对海流能发电技术中的低流速发电和能量管理两项关键技术进行了研究,重点解决了机组在低流速下启动和能量管理问题.在理论分析的基础上,设计制造了一台三叶片叶轮结构、额定功率为500瓦的低流速水平轴直驱型海流能发电样机,并设计了与之匹配的能量管理系统和PC机端监控界面.试验结果表明:机组在低流速时能正常启动,额定流速时满功率发电;能量管理系统能实时监测发电系统的各项电气参数,控制功能响应迅速;整个系统连续运行稳定、可靠.%Aiming at the problems that oceanographic instruments are usually far from the coastline and the power grid,traditional mode of power supply from power grid system is difficult and expensive to implement. In order to satisfy the special application requirement of oceano-graphic instruments power supply, two key technologies of low flow rate power generation and energy management in ocean current power gen-eration technology were studied, the problem of starting at low flow rate and energy management were discussed. Based on the theoretical a-nalysis, a three-blades, horizontal-axis, direct drive marine current turbine with a rated power of 500W was designed and manufactured, fur-thermore, the matching energy management system and PC monitoring interface were designed. The experimental results show that the gener-ation unit can start normally at low flow velocity and full power generation at rated flow velocity. The electrical parameters of the power gener-ation system are monitored by the energy management system in real time, and the control function is responsive. The whole system is stable and reliable in continuous operation.
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