Triboelectric Nanogenerator Based on a Rotational Magnetic Ball for Harvesting Transmission Line Magnetic Energy,Advanced Functional Materials

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Triboelectric Nanogenerator Based on a Rotational Magnetic Ball for Harvesting Transmission Line Magnetic Energy
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2021-11-25 , DOI: 10.1002/adfm.202108827
Xu Jin _{1,

2} , Zhihao Yuan _{1,

2} , Yapeng Shi _{1,

3} , Yanggui Sun ₁ , Ruonan Li _{1,

2} , Junhuan Chen ₁ , Longfei Wang ₁ , Zhiyi Wu _{1,

3,

4} , Zhong Lin Wang _{1,

2,

3,

4,

5}

Affiliation

Triboelectric nanogenerators (TENGs) are attractive in powering sensors for smart power grids. Herein, a TENG based on a rotational magnetic ball is presented to harvest the magnetic energy of transmission lines. The magnetic ball rolls in a spherical shell under the alternating magnetic field generated by the transmission line. The centrifugal force produced during the rotation is used to drive a TENG unit (ten times the weight of the magnetic ball and shell) to generate electricity with the assistance of coil springs. The device can maintain the stability of the output performance under high current shocks; meanwhile, the open-circuit voltage, output power, and operating frequency of a single TENG unit can reach 1.5 kV, 6.67 mW, and 20 Hz, respectively. Furthermore, a wireless alarm system for monitoring the temperature and dip angle of transmission lines is successfully driven by this device. This work demonstrates an efficient and nontraditional strategy for harvesting magnetic energy through TENG, which is applied to power-distributed and self-powered sensors for monitoring transmission lines.

中文翻译：

基于旋转磁球的摩擦纳米发电机用于收集传输线磁能

摩擦纳米发电机 (TENG) 在为智能电网的传感器供电方面具有吸引力。在此，提出了一种基于旋转磁球的 TENG 来收集传输线的磁能。磁球在传输线产生的交变磁场的作用下在球壳内滚动。旋转过程中产生的离心力用于驱动一个TENG单元（重量是磁球和外壳的十倍）在螺旋弹簧的帮助下发电。该器件可在大电流冲击下保持输出性能的稳定性；同时，单台TENG单元的开路电压、输出功率和工作频率分别可以达到1.5 kV、6.67 mW和20 Hz。此外，该装置成功驱动了用于监测输电线路温度和倾角的无线报警系统。这项工作展示了一种通过 TENG 收集磁能的有效且非传统的策略，该策略应用于用于监测输电线路的配电和自供电传感器。

更新日期：2021-11-25

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