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Proceedings 2017, 1(4), 585;

Energy Estimation for Electret Harvester with Nonlinear Spring

Laboratoire SYMME, Université Savoie Mont Blanc, Annecy, 74940 Haute Savoie, France
Graduate School of Engineering, University of Hyogo, Himeji, 671-2201 Hyogo, Japan
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
Author to whom correspondence should be addressed.
Published: 7 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
PDF [999 KB, uploaded 4 September 2017]


A design of an electret-type vibration energy harvester using non-linear springs is described. The use of bi-stable springs enabling a snap-through behavior is a well-known technique known for improving the low-frequency performances of energy harvesters. The electrical power from our bi-stable energy harvester concept is estimated using a numerical computing tool and an electrical equivalent circuit model. We conclude that our bi-stable spring harvester concept obtains larger power at lower frequencies compared to a similar linear design.
Keywords: electrostatic harvester; MEMS; non-linear behavior electrostatic harvester; MEMS; non-linear behavior
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Yamamoto, K.; Fujita, T.; Badel, A.; Formosa, F.; Kanda, K.; Maenaka, K. Energy Estimation for Electret Harvester with Nonlinear Spring. Proceedings 2017, 1, 585.

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