Modeling and Experimental Verification of an Electromagnetic and Piezoelectric Hybrid Energy Harvester

Fan Yuanyuan (Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huaian 223003)
Sang Yingjun (Faculty of Automation, Huaiyin Institute of Technology, Huaian 223003)
Li Man (Faculty of Automation, Huaiyin Institute of Technology, Huaian 223003)
Wu Shangguang (Faculty of Automation, Huaiyin Institute of Technology, Huaian 223003)
Ding Zujun (Faculty of Automation, Huaiyin Institute of Technology, Huaian 223003)
Wang Yeqin (Faculty of Automation, Huaiyin Institute of Technology, Huaian 223003)
Hao Yunrong (Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huaian 223003)

Journal of Engineering and Technological Sciences
Vol. 48 No. 5 (2016)

This paper describes mathematical models of an electromagnetic and piezoelectric hybrid energy harvesting system and provides an analysis of the relationship between the resonance frequency and the configuration parameters of the system. An electromagnetic and piezoelectric energy harvesting device was designed and the experimental results showed good agreement with the analytical results. The maximum load power of the hybrid energy harvesting system achieved 4.25 mW at a resonant frequency of 18 Hz when the acceleration was 0.7 g, which is an increase of 15% compared with the 3.62 mW achieved by a single electromagnetic technique.