ETRI-Knowledge Sharing Plaform

ENGLISH

성과물

논문 검색
구분 SCI
연도 ~ 키워드

상세정보

학술지 Study on Electromagnetic Energy Transducer in Ambient Vibration
Cited 3 time in scopus Download 9 time Share share facebook twitter linkedin kakaostory
저자
최원규, 김혜진, 박찬원, 이범선
발행일
201810
출처
IET Power Electronics, v.11 no.12, pp.1983-1990
ISSN
1755-4535
출판사
IET
DOI
https://dx.doi.org/10.1049/iet-pel.2017.0886
협약과제
16ZC1200, 안전 사각지대 교량관리를 위한 Ambient EH 무선 센서태깅 기반 안전관리 기술 개발, 박찬원
초록
This study documents the design of an electromagnetic energy transducer, which is used to convert ambient vibration into electrical energy. The response of the designed energy transducer is theoretically and experimentally analysed using a simple equivalent circuit model and magnetic field simulator in low-acceleration environments. For an electromagnetic energy transducer in ambient vibration, an approximate analytical expression is derived for the extracted power across a load. The energy transducer consists of four magnets (NdFeB, N35), two I-shaped magnetic cores, two U-shaped cores made of soft ferrite material, and a coil for induced voltage. The two U-shaped magnetic cores are surrounded by a coil with an approximate 3000 turn. The energy transducer is theoretically modelled using the commercial tool, COMSOL, and is experimentally validated through electrical measurements. The relation between the acceleration of vibration and the maximum average power that can be extracted at the optimal load was also studied. The size of the electromagnetic energy transducer is 43 × 37 × 80 mm3. The energy transducer has a maximum average power of 3.24 mW at a frequency of 28 Hz and an acceleration of 0.4g, and has a maximum average power of 3.83 mW at a frequency of 31 Hz and an acceleration of 0.5g.
KSP 제안 키워드
Average Power, Electrical measurements, Extracted power, Ferrite material, Magnetic field(MF), Optimal load, Soft ferrite, U-shaped, acceleration of vibration, ambient vibration, analytical expression