Modeling and analysis of energy harvester based on galloping considering the non-homogeneous beam
Sijie Gao, Dong Han, Mingrui Zheng, Jincheng Wang, Junjie Chen, Shirui Li, Weifeng He, Tianhao Zhou
Abstract
This paper proposes a piezoelectric energy harvester based on non-homogeneous beam, which is employed to capture wind energy by galloping. A distributed parameter model of piezoelectric energy harvester with the nonuniformity of cantilever beam is developed. The quasi steady state approximation is used to simulate the fluid force. The model is verified by the experimental results reported previously. The influences of load resistance, the position of piezoelectric patch, and the size of beam on the output power are studied. Finally, a set of optimization parameters are generated to study the performance of the energy harvester. The results show that compared with rectangular beam, the output power of piezoelectric energy harvester with non-homogeneous beam can be increased by 32%.