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Title: Design and optimization of a bi-axial vibration-driven electromagnetic generator

Abstract

To scavenge energy from ambient vibrations with arbitrary in-plane motion directions and over a wide frequency range, a novel electromagnetic vibration energy harvester is designed and optimized. In the harvester, a circular cross-section elastic rod, not a traditional thin cantilever beam, is used to extract ambient vibration energy because of its capability to collect vibration from arbitrary in-plane motion directions. The magnetic interaction between magnets and the iron core contributes to a nonlinear oscillation of the rod with increased frequency bandwidth. The influences of the structure configurations on the electrical output and the working bandwidth of the harvester are investigated using Ansoft's Maxwell 3D to achieve optimal performance. The experimental results show that the harvester is sensitive to vibrations from arbitrary in-plane directions and it exhibits a bandwidth of 5.7 Hz and a maximum power of 13.4 mW at an acceleration of 0.6 g (with g=9.8 ms⁻²).

Authors:
; ; ; ; ; ;  [1]
  1. Department of Optoelectronic Engineering, Research Center of Sensors and Instruments, Chongqing University, Chongqing 400044 (China)
Publication Date:
OSTI Identifier:
22306023
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 116; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACCELERATION; CROSS SECTIONS; DESIGN; ELECTROMAGNETIC RADIATION; FREQUENCY RANGE; INTERACTIONS; IRON; MAGNETS; NONLINEAR PROBLEMS; OPTIMIZATION; OSCILLATIONS; PULSE GENERATORS

Citation Formats

Yang, Jin, E-mail: yangjin@cqu.edu.cn, Yu, Qiangmo, Zhao, Jiangxin, Zhao, Nian, Wen, Yumei, Li, Ping, and Qiu, Jing. Design and optimization of a bi-axial vibration-driven electromagnetic generator. United States: N. p., 2014. Web. doi:10.1063/1.4895994.
Yang, Jin, E-mail: yangjin@cqu.edu.cn, Yu, Qiangmo, Zhao, Jiangxin, Zhao, Nian, Wen, Yumei, Li, Ping, & Qiu, Jing. Design and optimization of a bi-axial vibration-driven electromagnetic generator. United States. doi:10.1063/1.4895994.
Yang, Jin, E-mail: yangjin@cqu.edu.cn, Yu, Qiangmo, Zhao, Jiangxin, Zhao, Nian, Wen, Yumei, Li, Ping, and Qiu, Jing. Sun . "Design and optimization of a bi-axial vibration-driven electromagnetic generator". United States. doi:10.1063/1.4895994.
@article{osti_22306023,
title = {Design and optimization of a bi-axial vibration-driven electromagnetic generator},
author = {Yang, Jin, E-mail: yangjin@cqu.edu.cn and Yu, Qiangmo and Zhao, Jiangxin and Zhao, Nian and Wen, Yumei and Li, Ping and Qiu, Jing},
abstractNote = {To scavenge energy from ambient vibrations with arbitrary in-plane motion directions and over a wide frequency range, a novel electromagnetic vibration energy harvester is designed and optimized. In the harvester, a circular cross-section elastic rod, not a traditional thin cantilever beam, is used to extract ambient vibration energy because of its capability to collect vibration from arbitrary in-plane motion directions. The magnetic interaction between magnets and the iron core contributes to a nonlinear oscillation of the rod with increased frequency bandwidth. The influences of the structure configurations on the electrical output and the working bandwidth of the harvester are investigated using Ansoft's Maxwell 3D to achieve optimal performance. The experimental results show that the harvester is sensitive to vibrations from arbitrary in-plane directions and it exhibits a bandwidth of 5.7 Hz and a maximum power of 13.4 mW at an acceleration of 0.6 g (with g=9.8 ms⁻²).},
doi = {10.1063/1.4895994},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 11,
volume = 116,
place = {United States},
year = {2014},
month = {9}
}