Shell-Optimized Hybrid Generator for Ocean Wave Energy Harvesting DOI Creative Commons
Heng Liu, Dongxin Guo,

H. Zhu

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(6), P. 1502 - 1502

Published: March 18, 2025

With the increasing global emphasis on sustainable energy, wave energy has gained recognition as a significant renewable marine resource, drawing substantial research attention. However, efficient conversion of low-frequency, random, and low-energy motion into electrical power remains considerable challenge. In this study, an advanced hybrid generator design is introduced which enhances harvesting by optimizing wave–body coupling characteristics incorporating both triboelectric nanogenerator (TENG) electromagnetic (EMG) within shell. The optimized asymmetric trapezoidal shell (ATS) improves output frequency efficiency in environments. Experimental findings under simulated water excitation indicate that accelerations x, y, z directions for ATS are 1.9 m·s−2, 0.5 1.4 respectively, representing 1.2, 5.5, 2.3 times those observed cubic Under real ocean conditions, single TENG unit embedded achieves maximum transferred charge 1.54 μC, short-circuit current 103 μA, open-circuit voltage 363 V, surpassing factors 1.21, 1.24, 2.13, respectively. These performance metrics closely align with obtained six-degree-of-freedom platform oscillation (0.4 Hz, swing angle range ±6°), exceeding results laboratory-simulated waves. Notably, most probable along x-axis reaches 0.94 Hz trials, 1.94 ambient sea integrated efficiently captures low-quality to quality sensors This study highlights potential combining synergistic geometric integration achieve high-performance through improved coupling.

Language: Английский

Shell-Optimized Hybrid Generator for Ocean Wave Energy Harvesting DOI Creative Commons
Heng Liu, Dongxin Guo,

H. Zhu

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(6), P. 1502 - 1502

Published: March 18, 2025

With the increasing global emphasis on sustainable energy, wave energy has gained recognition as a significant renewable marine resource, drawing substantial research attention. However, efficient conversion of low-frequency, random, and low-energy motion into electrical power remains considerable challenge. In this study, an advanced hybrid generator design is introduced which enhances harvesting by optimizing wave–body coupling characteristics incorporating both triboelectric nanogenerator (TENG) electromagnetic (EMG) within shell. The optimized asymmetric trapezoidal shell (ATS) improves output frequency efficiency in environments. Experimental findings under simulated water excitation indicate that accelerations x, y, z directions for ATS are 1.9 m·s−2, 0.5 1.4 respectively, representing 1.2, 5.5, 2.3 times those observed cubic Under real ocean conditions, single TENG unit embedded achieves maximum transferred charge 1.54 μC, short-circuit current 103 μA, open-circuit voltage 363 V, surpassing factors 1.21, 1.24, 2.13, respectively. These performance metrics closely align with obtained six-degree-of-freedom platform oscillation (0.4 Hz, swing angle range ±6°), exceeding results laboratory-simulated waves. Notably, most probable along x-axis reaches 0.94 Hz trials, 1.94 ambient sea integrated efficiently captures low-quality to quality sensors This study highlights potential combining synergistic geometric integration achieve high-performance through improved coupling.

Language: Английский

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