WAVE-CURRENT COUPLED CHAIN GENERATOR FOR OFFSHORE BUOY NAVIGATION LIGHT

Zhang Jijun; Zhang Xiangyu; Song Yongxin

doi:10.19912/j.0254-0096.tynxb.2024-0883

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 238-247. DOI: 10.19912/j.0254-0096.tynxb.2024-0883

WAVE-CURRENT COUPLED CHAIN GENERATOR FOR OFFSHORE BUOY NAVIGATION LIGHT

Zhang Jijun¹, Zhang Xiangyu², Song Yongxin²

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Abstract

In response to the increasing energy consumption demands of offshore buoy navigation lights, this paper proposes a submerged chain generator capable of simultaneously harnessing wave and tidal energy in the marine environment. The motion and output voltage models of the generator are established, and numerical simulations are conducted to study the effects of component structure and motion parameters on its power generation performance. The stiffness of the springs and the planar excitation array structure in the generator are reasonably determined and experimentally verified. The results show that, under the same wave-current coupled excitation, the motion magnitude of the array decreases with the increase in the stiffness of the springs. The output voltage also increases with the increase in the motion frequency and magnitude of the array. When the swing magnitude and frequency of the anchor chain are 142.70 mm and 0.85 Hz, respectively, the power generation device （array dimensions： length × width × height=50 mm×20 mm × 50 mm） achieves an average voltage magnitude of 5.02 V and a maximum no-load power density of 0.024 mW/cm³, enabling the collection and conversion of low-frequency wave and current energy and providing power for offshore buoy navigation lights.

Key words

buoy / wave energy conversion / marine current generators / wave-current coupled / anchor chain generator / wave power

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Zhang Jijun, Zhang Xiangyu, Song Yongxin. WAVE-CURRENT COUPLED CHAIN GENERATOR FOR OFFSHORE BUOY NAVIGATION LIGHT[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 238-247 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0883

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