A New Vibration Energy Harvester Using Magnetoelectric Transducer

作者：Yang Jin^*; Wen Yumei; Li Ping; Dai Xianzhi; Li Ming

来源：Journal of Magnetics, 2011, 16(2): 150-156.

DOI：10.4283/JMAG.2011.16.2.150

• broadband vibration energy harvesting
• multi-cantilever beams
• magnetoelectric transducer
• magnetic force

Magnetoelectric (ME) transducers were originally intended for magnetic field sensors but have recently been used in vibration energy harvesting. In this paper, a new broadband vibration energy harvester has been designed and fabricated to be efficiently applicable over a range of source frequencies, which consists of two cantilever beams, two magnetoelectric (ME) transducers and a magnetic circuit. The effects of the structure parameters, such as the non-linear magnetic forces of the ME transducers and the magnetic field distribution of the magnetic circuit, are analyzed for achieving the optimal vibration energy harvesting performances. A prototype is fabricated and tested, and the experimental results on the performances show that the harvester has bandwidths of 5.6 Hz, and a maximum power of 0.25 mW under an acceleration of 0.2 g (with g = 9.8 ms(2)).

• 出版日期2011-6
• 单位重庆大学