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Numerical study and design optimization of electromagnetic energy harvesters integrated with flexible magnetic materials

Title
Numerical study and design optimization of electromagnetic energy harvesters integrated with flexible magnetic materials
Author
윤상원
Keywords
Design optimization; Electromagnetic; Energy harvester; Magnetic nanomaterial; Soft magnetic back iron
Issue Date
2017-05
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Citation
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v. 31, no. 5, page. 2399-2406
Abstract
This study presents a new design of an electromagnetic energy harvester integrated with a soft magnetic material. The harvester design optimizes the magnetic material characteristics and the size of a rectangular permanent magnet. The design employs a complete magnetic circuit made of (1) a thin-film soft magnetic material that facilitates a flexible but highly (magnetically) permeable beam and (2) an optimally-sized magnet that maximizes the harvester performance. The design is demonstrated to reduce magnetic flux leakage, and thus considerably enhances both magnetic flux density (B) and its change by time (dB/dt), which both influence harvester performance. The improvement in harvester performances strongly depends on critical design parameters, especially, the magnet size and characteristics of magnetic materials, including permeability, stiffness, and thickness. The analyses conclude that recently-introduced nanomaterials (having ultrahigh magnetic permeability) can potentially innovate harvester performances. However, the performance may be degraded without design optimization. Once optimized, the integrated nanomaterials facilitate a significant improvement compared with a conventional design without integrated magnetic materials.
URI
https://link.springer.com/article/10.1007%2Fs12206-017-0437-1https://repository.hanyang.ac.kr/handle/20.500.11754/114084
ISSN
1738-494X; 1976-3824
DOI
10.1007/s12206-017-0437-1
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > AUTOMOTIVE ENGINEERING(미래자동차공학과) > Articles
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