Fundamental Limits to Nonlinear Energy Harvesting
Name
PhysRevApplied.4.064009.pdf
Size
1.61 MB
Format
Adobe PDF
Checksum (MD5)
aa33b8a962ac4042c7feed0870231ae2
Author(s)
Haji Hosseinloo, Ashkan
Turitsyn, Konstantin
Date Issued
December 2015
Journal
Physical Review Applied
Publisher
American Physical Society
Citation
Haji Hosseinloo, Ashkan, and Konstantin Turitsyn. “Fundamental Limits to Nonlinear Energy Harvesting.” Physical Review Applied 4, no. 6 (December 29, 2015). © 2015 American Physical Society
Version
Final published version
Abstract
Linear and nonlinear vibration energy harvesting has been the focus of considerable research in recent years. However, fundamental limits on the harvestable energy of a harvester subjected to an arbitrary excitation force and different constraints is not yet fully understood. Understanding these limits is not only essential for an assessment of the technology potential, but it also provides a broader perspective on the current harvesting mechanisms and guidance in their improvement. Here, we derive the fundamental limits on the output power of an ideal energy harvester for arbitrary excitation waveforms and build on the current analysis framework for the simple computation of this limit for more sophisticated setups. We show that the optimal harvester maximizes the harvested energy through a mechanical analog of a buy-low-sell-high strategy. We also propose a nonresonant passive latch-assisted harvester to realize this strategy for an effective harvesting. It is shown that the proposed harvester harvests energy more effectively than its linear and bistable counterparts over a wider range of excitation frequencies and amplitudes. The buy-low-sell-high strategy also reveals why the conventional bistable harvester works well at low-frequency excitation.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevApplied.4.064009
