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A vibration-based electromagnetic energy harvester system with highly efficient interface electronics
Date
2011-09-01
Author
Rahimi, Arian
Zorlu, Özge
Muhtaroǧlu, Ali
Külah, Haluk
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
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This paper presents a vibration-based electromagnetic (EM) energy harvester system utilizing novel and highly efficient interface electronics. The energy harvesting module up-converts the environmental low frequency vibrations for increased AC power output. The interface circuit employs a boot-strap technique to reduce the threshold voltage of the rectifiers further increasing the power conversion efficiency of the overall system. The complete system, composed of an energy harvester module, and a compact 0.35 μm CMOS IC, was fully validated. It is capable of powering a 1.5V, 15μA load with 65% conversion efficiency, and 5% ripple, at an external vibration frequency of 10Hz. The recorded efficiency is the highest achieved value for vibration-based EM energy harvesters with passive rectification to the best of our knowledge.
Subject Keywords
Rectifiers
,
Threshold voltage
,
Transistors
,
Vibrations
,
Energy harvesting
,
Power conversion
,
Integrated circuits
URI
https://hdl.handle.net/11511/42262
DOI
https://doi.org/10.1109/transducers.2011.5969876
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar