表題番号:2021C-151 日付:2022/04/09
研究課題Research of Interface Circuit for Hybrid Triboelectric Nanogenerators
研究者所属(当時) 資格 氏名
(代表者) 理工学術院 基幹理工学部 助手 ソ イズイ
研究成果概要

To make fully utilize the energy in the ambient environment, such as collecting wind energy and acoustic energy simultaneously, hybrid triboelectric nanogenerators based on multiple working modes are proposed. However, due to the working frequency of TENGs (triboelectric nanogenerators) and internal resistance of TENGs composed of time-varying parasitic capacitors are different under different working modes, an interface circuit is needed to complete impedance matching and improve their output.

In this work, the energy of TENGs' positive half cycle is still released to the load through the inductance, while the energy of TENGs' negative half cycle is utilized for the pre-biasing of TENG's positive half cycle, which can further improve the output and the impedance matching of TENGs. In addition, the peak detector is designed by using bipolar junction transistor, which can automatically identify the voltage peak of TENGs and the best advantage of it is cold-start can be achieved.

However, the proposed circuit has not been fully completed. First, two inductors are used in the proposed circuit, which will increase the area of the circuit. Moreover, the proposed circuit can indeed be cold-start and identify the peak voltage of TENGs, and there is no problem for a single TENG, but for several TENGs with different motion phases, they will affect each other's output and reduce the output. The cause and solution of this problem have not been found.

Future research will be focused on reducing the number of inductors used in the proposed circuit to one, and solving the problem that the output of TENGs affect each other.