A magnetoelectric-based broadband vibration energy harvester for powering wireless sensors

作者：Yang Jin^*; Wen YuMei; Li Ping; Bai XiaoLing

来源：Science in China - Series E: Technological Sciences , 2011, 54(6): 1419-1427.

DOI：10.1007/s11431-011-4367-3

• broadband vibration energy harvesting
• multi-cantilever beams
• magnetostrictive material
• magnetoelectric transducer
• nonlinear vibration

Scavenging vibration energy directly from environments is an attractive technique for potentially powering small and/or wireless electronic devices in a smart structure and system. In this paper, a novel broadband vibration energy harvester is designed and analyzed, which consists of three cantilever beams, two magnetoelectric (ME) transducers and a magnetic circuit. A theoretical model is developed to analyze the effects of the structure parameters on the frequency response and the electrical output for achieving the optimal vibration energy harvesting performances. A prototype is fabricated and tested. The experimental results show that the harvester has a bandwidth of 7.2 Hz and an average power of 0.21 mW at an acceleration of 0.2 g (with g=9.8 ms(-2)).

• 出版日期2011-6
• 单位重庆大学