摘要
针对现有大多数波浪压电俘能装置在低频海洋环境中只能吸收一个方向的频率,而在多变的海洋环境下俘能装置工作频率与波浪运动频率匹配困难且带宽较窄的问题,提出一种能提高浮子传递波浪能效率的壳体结构,并给出了压电振子及拓宽装置频带的优化意见。最后结合波浪能及压电转换定律,通过对优化后的俘能装置进行转换效率计算,指出压电式宽频振动俘能装置在海洋环境具有广阔的应用前景。
In view of the fact that most of the existing wave piezoelectric energy capture devices can only absorb frequencies in one direction in a low-frequency marine environment,the working frequency of the energy capture device is difficult to match with the wave motion frequency and the bandwidth is narrow in a changeable marine environment.A shell structure that can improve the efficiency of wave energy transfer by the float is proposed,and the piezoelectric vibrator and optimization suggestions for widening the frequency band of the device are given.Finally,combining the wave energy and the piezoelectric conversion law,by calculating the conversion efficiency of the optimized energy capture device,it is pointed out that the piezoelectric broadband vibration energy capture device has broad application prospects in the marine environment.
作者
冯武卫
郭磊
Feng Wuwei;Guo Lei(School of Marine and Electromechanical Engineering,Zhejiang Ocean University,Zhejiang Zhoushan,316022,China)
出处
《机械设计与制造工程》
2020年第11期96-100,共5页
Machine Design and Manufacturing Engineering
关键词
压电材料
波浪发电
压电叠堆
piezoelectric materials
ocean wave power generation
piezoelectric stack
