Low-frequency vibration energy harvester using a spherical permanent magnet with controlled mass distribution
| العنوان: | Low-frequency vibration energy harvester using a spherical permanent magnet with controlled mass distribution |
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| المؤلفون: | Suna Ju, Yunhee Choi, Song Hee Chae, Sangbeom Jun, Chang Hyeon Ji |
| المصدر: | Smart Materials and Structures. 24:065029 |
| بيانات النشر: | IOP Publishing, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Physics, Mass distribution, business.industry, Acoustics, Electrical engineering, Permanent magnet synchronous generator, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Vibration, Acceleration, Mechanics of Materials, Magnet, Signal Processing, General Materials Science, Center of mass, Electrical and Electronic Engineering, Proof mass, business, Civil and Structural Engineering, Voltage |
| الوصف: | This paper presents a vibration energy harvester using a springless spherical permanent magnet with a non-uniform mass distribution as a proof mass. The magnet has been designed to have the center of mass below the geometrical center, which generates a roly-poly-like motion in response to external vibrations and maintains the upright position. Utilizing this roly-poly-like magnet, proof-of-concept electromagnetic energy harvesters have been fabricated, tested and analyzed. An analytical model which explains the motion of the magnet assembly and resulting output voltage has been developed by finite element analysis of the magnetic field distribution and motion analysis of the magnet assembly. With the fabricated device, a maximum open-circuit voltage of 48.85 mVrms and an output power of 9.03 μW have been obtained in response to a 20 Hz sinusoidal vibration at 3 g acceleration. |
| تدمد: | 1361-665X 0964-1726 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::3f84f22906965d27c28518e3d42fd412 https://doi.org/10.1088/0964-1726/24/6/065029 |
| رقم الأكسشن: | edsair.doi...........3f84f22906965d27c28518e3d42fd412 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1361665X 09641726 |
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