Affiliation:
1. Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education College of Civil Engineering and Architecture Guangxi University Nanning 530004 P. R. China
2. Center on Nanoenergy Research School of Physical Science and Technology Guangxi University Nanning Guangxi 530004 P. R. China
3. Guangdong Engineering Center for Structure Safety and Health Monitoring Department of Civil and Smart Construction Engineering Shantou University P. R. China
4. Ocean College Zhejiang University Zhoushan Zhejiang 316021 P. R. China
Abstract
AbstractIn order to address the challenge of the wide application of hybrid energy harvesters based on triboelectric‐electromagnetic effect in actual ocean environments, it is crucial to execute hydrodynamic tests conformed to the actual ocean environments and conduct field tests. Here, a coaxial hybrid energy harvester (CH‐EH) is prepared, and its hydrodynamic behaviors are investigated systematically through a large‐scale wave‐current flume. The verification test of the CH‐EH output performance is carried out offshore at the port of SanDun, Qinzhou. The results show: 1) The CH‐EH can achieve high output (U > 380 V, I > 2.4 mA) under small regular wave excitation (H > 0.15 m), and it maintains high output (U > 220 V, I > 1.8 mA) over a wide range of regular wave frequencies (0.6 Hz < f < 1.1 Hz). 2) The output performance of the CH‐EH under irregular wave excitation is lower than that under regular wave excitation. The variation trend of the CH‐EH output performance obtained in actual ocean tests is similar to that obtained in the laboratory, but slightly lower than that obtained in the laboratory. 3) The output performance of the CH‐EH is positively correlated with its draft depth, and the ocean current inhibits its output performance.
Funder
National Natural Science Foundation of China
Ministry of Science and Technology