Triboelectric-electromagnetic hybrid generator with Savonius flapping wing for low-velocity water flow energy harvesting

Jiacheng Zhang, Yang Yu, Hengyu Li, Mingkang Zhu, Sheng Zhang, Chengjie Gu, Lin Jiang, Zhong Lin Wang, Jianyang Zhu and Tinghai Cheng

Applied Energy, 2024, vol. 357, issue C, No S0306261923018767

Abstract: Low-velocity water flow exists generally in open channel environments, and harvesting energy from these water flows remains a challenge. Herein, a savonius flapping wing triboelectric–electromagnetic hybrid generator (SFW-TEHG) is proposed to harvest the low-velocity water flow energy by the reciprocating flapping of the savonius flapping wing. Whereafter, the reciprocating flapping is converted into the high-frequency rotating of the energy conversion part by the symmetrical distributed ratchet-gear-rack compound transmission mechanism, thus realizing the conversion of hydrokinetic energy into electricity. Under the water flow velocity of 0.21 m/s, the open-circuit voltage peak and the short-circuit current peak of the TENG reach 1.57 kV and 30.94 μA, and that of the EMG reach 6.24 V and 3.76 mA, respectively. In application demonstration, the SFW-TEHG can drive wireless sensors to monitor the environment. The SFW-TEHG furnishes a solution for the difficulty of harvesting low-velocity water flow energy and powering microsensors installed widely.

Keywords: Triboelectric nanogenerator; Flapping wing; Low-velocity water flow; Energy harvesting; Electromagnetic generator (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (1)

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DOI: 10.1016/j.apenergy.2023.122512

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