Design, modeling and experiments of swing L-shape piezoelectric beam applied to tidal and wave energy harvesting

Journal Article

Title: Design, modeling and experiments of swing L-shape piezoelectric beam applied to tidal and wave energy harvesting

Author:

Feng, B.; Xu, H.; Wang, B.; Wang, Y.; Zhu, Y.; Bi, R.; Zhang, D.; Qian, P.

Publication Date:

December 1, 2023

Journal:

Ocean Engineering

Volume:

289

Issue:

Publisher:

Elsevier

Affiliation:

Zhejiang University, China State Shipbuilding Corporation, China Electric Power Research Institute, Southwest Technology and Engineering Research Institute

Technology:

Current, Tidal, Wave

Collection Method:

Lab Data

Engineering:

Performance

Document Access

Website:

External Link

Citation

Feng, B.; Xu, H.; Wang, B.; Wang, Y.; Zhu, Y.; Bi, R.; Zhang, D.; Qian, P. (2023). Design, modeling and experiments of swing L-shape piezoelectric beam applied to tidal and wave energy harvesting. Ocean Engineering, 289(1) https://doi.org/10.1016/j.oceaneng.2023.116193

Abstract

Swing-piezoelectric energy harvesting has the potential to be used for small-scale tidal and wave energy harvesting. A novel method is proposed to capture tidal and wave energy by combining swing motion and piezoelectric elements in this paper. The dynamic equation and electromechanical coupling equation for the Swing L-shaped Beam Piezoelectric Energy Harvester (SLB-PEH) are derived using the Lagrangian equation, and a Simulink-Adams simulation model is constructed. The model's accuracy is confirmed by comparing theoretical, simulated, and experimental outcomes. Furthermore, key parameters' impact on SLB-PEH performance is examined through experiments. The paper introduces an interleaved SLB-PEH to enhance energy capture efficiency within space constraints. It also describes the design of the Integrated Spring Tidal-Wave Piezoelectric Energy Harvester (ISTW-PEH), which is inspired by the interleaved SLB-PEH structure. The experimental results demonstrate that the ISTW-PEH can generate a maximum power output of 13.6 mW at a flow velocity of 0.3 m/s and a maximum power of 57.6 mW under a wave height of 0.08 m and a wave period of 0.08s.