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10 April 2013A vibration energy harvester using diamagnetic levitation
In this paper a novel electromagnetic vibration type energy harvester which uses a diamagnetic levitation system is
conceptualized, designed, fabricated, and tested. The harvester uses two diamagnetic plates made of pyrolytic graphite
between which a cylindrical magnet levitates passively. Two archimedean spiral coils are placed in grooves which are
engraved in the pyrolytic graphite plates, used to convert the mechanical energy into electrical energy efficiently. The
geometric configurations of coils are selected based on the field distribution of the magnet to enhance the efficiency of
the harvester. A thorough theoretical analysis is done to compare with the experiment results. At an input power of
103.45 μW and at a frequency of 2.7 Hz, the harvester generated a power of 0.744 μW at an efficiency of 0.72 %. Both
theoretical and experimental results show that this new energy harvesting system is efficient and can capture low
frequency broadband spectra.
S. Palagummi andF. G. Yuan
"A vibration energy harvester using diamagnetic levitation", Proc. SPIE 8688, Active and Passive Smart Structures and Integrated Systems 2013, 86880N (10 April 2013); https://doi.org/10.1117/12.2009657
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S. Palagummi, F. G. Yuan, "A vibration energy harvester using diamagnetic levitation," Proc. SPIE 8688, Active and Passive Smart Structures and Integrated Systems 2013, 86880N (10 April 2013); https://doi.org/10.1117/12.2009657