A shear-mode magnetoelectric heterostructure for harvesting external magnetic field energy

2nd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

He, Wei^1 ; Zhang, Jitao^2 ; Lu, Yueran^1 ; Yang, Aichao^3 ; Qu, Chiwen^1 ; Yuan, Shuai^4

School of Information Engineering, Baise University, Baise

533000, China^1

College of Electric and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou

450002, China^2

Jiangxi Electric Power Research Institute, Nanchang

330096, China^3

College of Mechanical and Electric Engineering, Sichuan Agricultural University, Ya'an

625014, China^4

关键词: Energy Harvester;    External magnetic field;    Magnetoelectric response;    Nd-Fe-B magnets;    Output power;    Plate working;    Shear modes;    Terfenol-D;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/59/1/012027/pdf
DOI  :  10.1088/1755-1315/59/1/012027

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, a magnetoelectric (ME) energy harvester is presented for scavenging external magnetic field energy. The proposed heterostructure consists of a Terfenol-D plate, a piezoelectric PZT5H plate, a NdFeB magnet, and two concentrators. The external magnetic field is concentrated to the Terfenol-D plate and the PZT5H plate working in shear-mode, which can potentially increase the magnetoelectric response. Experiments have been performed to verify the feasibility of the harvester. Under the magnetic field of 0.6 Oe, the device produces a RMS voltage of 0.53 V at the resonant frequency of 32.6 kHz. The corresponding output power reaches 44.96 μW across a 3.1 kΩ matching resistor.