Wang Chun Jie, Meng Fan, Fu Qiang, Fan Chen Hui, Cui Lin
School of Electrical Engineering and Automation, Tianjin University of Technology, Tianjin 300384, China.
Tianjin Complex System Control Theory and Application Key Laboratory, Tianjin 300384, China.
Micromachines (Basel). 2022 Sep 27;13(10):1619. doi: 10.3390/mi13101619.
Triboelectric nanogenerators can convert wave energy into the electrical energy required by ocean sensors, but the problem of the low electrical output performance of triboelectric nanogenerators has always been a concern. In this paper, an annular triboelectric nanogenerator (A-TENG) composed of an annular outer shell and an inner ball is proposed to improve the electrical output performance of the triboelectric nanogenerator by optimizing the structural parameters and wave parameters. Using the control variables, the effects of structural parameters (structure size, number of electrodes, electrode spacing, inner ball diameter, and number of inner balls) and wave parameters (wave frequency and wave amplitude) on the electrical output performance of the A-TENG were studied by combining COMSOL simulation and experimental research. The experimental results show that increasing the diameter and number of inner spheres can improve the open-circuit voltage between electrodes; the multi-electrode structure can improve the electron transfer rate and efficiently collect wave energy in all directions; and within the range of fixed sea conditions, there is an optimal annular size, which has the advantages of good electrical output performance and small size. The electrical output performance of the A-TENG can be greatly improved by optimizing the structural parameters. There are optimal wave parameters, such that the A-TENG can maximize the ocean wave energy conversion. This low-cost, long-life, efficient, and reliable energy harvesting system is ideal for powering ocean sensors.
摩擦纳米发电机可以将波浪能转化为海洋传感器所需的电能，但摩擦纳米发电机电输出性能较低的问题一直备受关注。本文提出了一种由环形外壳和内球组成的环形摩擦纳米发电机（A-TENG），通过优化结构参数和波浪参数来提高摩擦纳米发电机的电输出性能。采用控制变量法，结合COMSOL模拟和实验研究，研究了结构参数（结构尺寸、电极数量、电极间距、内球直径和内球数量）和波浪参数（波浪频率和波幅）对A-TENG电输出性能的影响。实验结果表明，增加内球的直径和数量可以提高电极之间的开路电压；多电极结构可以提高电子转移速率，并能在各个方向上有效收集波浪能；在固定海况范围内，存在一个最佳的环形尺寸，其具有电输出性能好和尺寸小的优点。通过优化结构参数可以大大提高A-TENG的电输出性能。存在最佳的波浪参数，使得A-TENG能够最大限度地实现海浪能量转换。这种低成本、长寿命、高效且可靠的能量收集系统是为海洋传感器供电的理想选择。
