4.6 Article

Comparative study of energy harvesting performance of magnetoelectric composite-based piezoelectric beams subject to varying magnetic field

期刊

SMART MATERIALS AND STRUCTURES
卷 31, 期 10, 页码 -

出版社

IOP Publishing Ltd
DOI: 10.1088/1361-665X/ac798c

关键词

magnetostrictive materials; energy harvesting; alternating magnetic field; DC bias magnetic field; finite element simulation

资金

  1. National Science Fund for Distinguished Young Scholars of China [51925504]
  2. Foundation for Innovative Research Groups of the National Natural Science Foundation of China [52021003]
  3. Project of Basic Technical Research of China [JSJL2018110A001]
  4. National Science and Technology Innovation Leading Academic (Ten Thousand Talent Program)
  5. Pre-research of equipment of the General Armaments Department [41422050301]
  6. About promoting scientific research cooperation and high-level talent training program with Canada in 2021 of Division of American and Oceanian Affairs, China Scholarship Council [109 [2021]]
  7. About promoting scientific research cooperation and high-level talent training program with Australia in 2021 of Division of American and Oceanian Affairs, China Scholarship Council [109 [2021]]
  8. About promoting scientific research cooperation and high-level talent training program with New Zealand in 2021 of Division of American and Oceanian Affairs, China Scholarship Council [109 [2021]]
  9. About promoting scientific research cooperation and high-level talent training program with Latin America in 2021 of Division of American and Oceanian Affairs, China Scholarship Council [109 [2021]]
  10. National Natural Science Foundation of China [52075220]
  11. Jilin Provincial Department of Science & Technology Fund Project [20210101056JC]
  12. China Postdoctoral Science Foundation [020M681038]
  13. Interdisciplinary Research Fund of Jilin University [101832020DJX035]
  14. China Scholarship Council [201906170171]

向作者/读者索取更多资源

This study investigated the working mechanism of magnetoelectric composite components in complex magnetic field environments, revealing the different responses of different magnetostrictive materials to coupled magnetic fields. The findings provide guidance for the design of magnetoelectric energy harvesters.
Magnetostrictive materials with good mechanical properties can effectively convert the alternating magnetic energy in the environment into mechanical vibrations via the magnetostriction effect. Few studies exist on the working mechanism and the effect on the performance of magnetoelectric (ME) composite components in complex magnetic field environments. This work first investigated the magnetoelectric conversion process of two types of ME composite components under the action of DC magnetic field alone and the DC-AC coupled magnetic field using COMSOL simulation. When coupled with AC magnetic field, the DC bias magnetic field can enhance the magnetization by AC field for the Galfenol alloy component and negate the magnetization for the nickel component. Then, two types of ME composite components made from Galfenol alloy and nickel bonded with piezoelectric transducer are prototyped and tested for energy harvesting. The experimental results show that, under a harmonic excitation of 3 Oe magnetic field, the DC bias magnetic field of 120 Oe can increase the open-circuit voltage of the Galfenol alloy based harvester from 0.495 V to 10.68 V, and the output power from 1.6 mu W to 42 mu W by 2525% with a matched external resistance of 50 k omega. Under the same amplitude of AC magnetic field, the DC bias magnetic field increases the open-circuit voltage of the nickel based harvester from 0.117 V to 0.837 V, and the output power from 2.6 mu W to 23 mu W by 784.6% with a matched resistance of 1000 k omega. The findings of this work reveal the effect of the coupled magnetic field for the magnetostriction for different magnetostrictive materials and provide the guideline for the design of magnet electric energy harvesters.

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