新型棘轮止逆波能收集装置建模及数值分析

针对现有波浪能收集装置结构复杂、可靠性低及转化效率低等瓶颈问题，设计出一种新型棘轮止逆波能收集装置，该装置能够全周期可靠高效地利用海浪发电。建立了以海浪特性为外部激励的系统动力学非线性方程，推导了考虑发电机负载作用的能量转换效率公式。对系统参数进行了敏感性分析并结合某海域典型海浪特性，对浮体关键参数及装置转换效率进行了仿真预测。研究结果表明，选取较差波况条件下，发电机仍具有周期性的转矩输入特性及较高的平均发电效率。

Modeling and Numerical Analysis of a Novel Anti-reverse Ratchet Wave Energy Collector

To avoide the bottleneck problems of existing wave energy converters such as complex structures, low reliability and low conversion efficiency, a novel anti-reverse ratchet wave energy collector was proposed，which could generate electricity by wave reliably and efficiently for the whole period. The dynamics nonlinear equations were established with external excitations based on wave characteristics. The efficiency of energetic transduction with load effect was deduced. The sensitivity analyses of the system parameters were performed and combined with typical wave characteristics, key parameters for floating body and convert efficiency were simulated. The results show that, under the poor situation of the sea, the generator still has periodic input torque characteristics and high average efficiency of power generation.