Unlocking multidirectional and broadband wind energy harvesting with triboelectric nanogenerator and vortex-induced vibration of sphere  

作　　者：Lanbin ZHANG Yixiang HE Bo MENG Huliang DAI Lin WANG 

机构地区：[1]Faculty of Engineering,China University of Geosciences,Wuhan,430074,China [2]International Joint Research Center for Deep Earth Drilling and Resource Development,Wuhan,430074,China [3]Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment,School of Aerospace Engineering,Huazhong University of Science and Technology,Wuhan,430074,China [4]Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen,Guangdong Province,518060,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2024年第11期1895-1912,共18页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.12202151 and 12272140)。

摘　　要：A unique oscillating wind-driven triboelectric nanogenerator(OWTENG)based on the sphere's vortex-induced vibration(VIV)behavior is proposed in this study,which can harvest wind energy across a multitude of horizontal directions.With the Euler-Lagrange method,the coupled governing equations of the OWTENG are established and subsequently validated by experimental tests.The vibrational properties and output performance of the OWTENG for varying wind speeds are analyzed,demonstrating its effectiveness in capturing wind energy across a broad range of wind speeds(from 2.20 m/s to 8.84 m/s),and the OWTENG achieves its peak output power of 106.3μW at a wind speed of 5.72 m/s.Furthermore,the OWTENG maintains a steady output power across various wind directions within the speed range of 2.20 m/s to 7.63 m/s.Nevertheless,when the wind speed exceeds 7.63 m/s,the vibrational characteristics of the sphere shift based on the wind direction,leading to fluctuations in the OWTENG's output power.This research presents an innovative approach for designing vibrational triboelectric nanogenerators,offering valuable insights into harvesting wind energy from diverse directions and speeds.

关 键 词：wind energy harvesting triboelectric nanogenerator vortex-induced vibration(VIV) lock-in region 

分 类 号：TM31[电气工程—电机]