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An efficient integrated interface electronics for electromagnetic energy harvesting from low voltage sources
Date
2013-12-01
Author
Ulusan, Hasan
Gharehbaghi, Kaveh
Zorlu, Ozge
Muhtaroglu, Ali
Külah, Haluk
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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This paper presents a fully-integrated self-powered interface circuit for efficient rectification of the signals generated by vibration based low-voltage electromagnetic (EM) energy harvesters. The circuit utilizes an improved AC/DC doubler structure with active diodes to minimize the forward bias voltage drop for enhancing the rectifier efficiency. The comparators in the active diodes are powered internally by another passive AC/DC doubler with diode connected transistors. The performance is maximized through custom-designed comparators for each of the positive and negative terminals of the dual rail output. Measurement results show that the system is capable of driving 40 μA load at 0.61 V, with 67% power conversion efficiency, when operated together with an inhouse EM harvester subjected to vibrations at 10 Hz, 2.5 mm peak-to-peak displacement with 0.5 g acceleration. The circuit is able to rectify AC inputs with peak amplitude as low as 100 mV.
Subject Keywords
Active Rectifier
,
Low Voltage AC/DC Conversion
,
Vibration-Based Energy Harvesting
,
Electromagnetic Energy Harvester
URI
https://hdl.handle.net/11511/39718
DOI
https://doi.org/10.1109/transducers.2013.6626800
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
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H. Ulusan, K. Gharehbaghi, O. Zorlu, A. Muhtaroglu, and H. Külah, “An efficient integrated interface electronics for electromagnetic energy harvesting from low voltage sources,” 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39718.