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

Author

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

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.

Suggested Citation

  • Zhang, Jiacheng & Yu, Yang & Li, Hengyu & Zhu, Mingkang & Zhang, Sheng & Gu, Chengjie & Jiang, Lin & Wang, Zhong Lin & Zhu, Jianyang & Cheng, Tinghai, 2024. "Triboelectric-electromagnetic hybrid generator with Savonius flapping wing for low-velocity water flow energy harvesting," Applied Energy, Elsevier, vol. 357(C).
    • Handle: RePEc:eee:appene:v:357:y:2024:i:c:s0306261923018767
    DOI: 10.1016/j.apenergy.2023.122512
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