Design of a multi-direction piezoelectric and electromagnetic hybrid energy harvester used for ocean wave energy harvesting

Liang Chen; Chong Li; Jiwen Fang

doi:10.1063/5.0160131

Design of a multi-direction piezoelectric and electromagnetic hybrid energy harvester used for ocean wave energy harvesting

Rev Sci Instrum. 2023 Dec 1;94(12):125005. doi: 10.1063/5.0160131.

Authors

Liang Chen¹, Chong Li¹, Jiwen Fang¹

Affiliation

¹ School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China.

PMID: 38088781
DOI: 10.1063/5.0160131

Abstract

Ocean waves contain a great deal of energy, and the collection and utilization of wave energy is of great significance for sustainable development. In this paper, a multi-direction piezoelectric and electromagnetic hybrid energy harvester (PEHEH) based on magnetic coupling is proposed that can collect low frequency vibration energy from multiple directions. The proposed PEHEH combines piezoelectricity and electromagnetism through magnetic coupling to collect energy in the same excitation. The mechanical model of the PEHEH is established, and finite element simulation software COMSOL and computational fluid dynamics are used to analyze and verify the feasibility and practicability of the PEHEH structure. An experimental platform is built to test the output performance of the PEHEH. The results show that the maximum energy generated by PEHEH is 19.4 mW when the magnetic distance is 16 mm and the excitation frequency is 9 Hz. The hybrid energy harvester can light 56 light emitting diodes, which verified the feasibility of practical application. Therefore, the proposed hybrid energy harvester can effectively collect low-frequency wave energy and has a broad application prospect as a power source for low-power electronic devices.