轮缘驱动型潮流能发电系统启动特性研究与分析

Research and Analysis on the Start-Up Characteristics of the Rim-Driven Marine Current Power Generation System

轮缘驱动型潮流能发电系统将导流罩、叶轮和发电机集成为一体化设计,叶轮直接驱动发电机旋转发电。最小启动流速是衡量系统性能的一个重要指标,决定其启动性能的主要因素为叶轮启动力矩、系统摩擦力矩和发电机齿槽转矩。对影响系统启动性能的主要因素进行了分析,详细分析了叶轮启动转矩和发电机齿槽转矩特性。使用理论分析结合有限元仿真方法分析了轮缘驱动型潮流能发电样机系统的启动特性,并通过样机实验验证了理论分析的正确性。本文的分析结论可以为轮缘驱动型潮流能发电系统的设计和分析提供一定理论指导。

The shroud and turbine are integrated into the generator in the rim-driven marine current power generation（RMCP） system in which the generator is directly driven by the turbine without any transmission component. The least start-up water speed is an important parameter for measuring the performance of the RMCP system. The start-up characteristics of the RMCP system mainly depend on the start torque of turbine, the friction torque and the generator cogging torque. This paper analyzes these factors, and focuses on the characteristics of the start torque of turbine and generator cogging torque through theoretical method and finite element simulation method. The prototype experimental values are used to validate the theoretical analysis results. The conclusion of this paper can provide theoretical guidance for the optimal design of the RMCP system.