NDLI: Study on electromagnetic energy transducer in ambient vibration

Content Provider	IET Digital Library
Author	Choi, Won Kyu Kim, Hye Jin Park, Chan Won Lee, Bomson
Abstract	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.
Starting Page	1983
Ending Page	1990
Page Count	8
ISSN	17554535
Volume Number	11
e-ISSN	17554543
Issue Number	Issue 12, Oct (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/11/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2017.0886
Journal	IET Power Electronics
Publisher Date	2018-05-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Approximate Analytical Expression Coils COMSOL Commercial Tool Electric Sensing Device Electrical Measurement Electromagnetic Device Electromagnetic Device Application Electromagnetic Energy Transducer Energy Measurement Equivalent Circuit Equivalent Circuit Model Ferrites Ferrites And Garnets Frequency 28.0 Hz Frequency 31.0 Hz I-shaped Magnetic Cores Inductors And Transformer Magnetic Core Magnetic Field Measurement Magnetic Field Simulator Magnetic Sonsor Magnetic Variables Measurement Mass 0.4 G Mass 0.5 G Mechanical Variables Measurement Power 3.24 MW Power 3.83 MW Power And Energy Measurement Sensing Device And Transducers Soft Ferrite Material Soft Magnetic Material U-shaped Magnetic Cores Vibration Measurement
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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