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Harvesting Vibration Energy Using Nonlinear Oscillations of an Electromagnetic Inductor
2010
  • Christopher Lee, Franklin W. Olin College of Engineering
  • David Stamp, Franklin W. Olin College of Engineering
  • Nitin Kapania, Franklin W. Olin College of Engineering
  • José Oscar Mur-Miranda, Franklin W. Olin College of Engineering
Document Type
Conference Proceeding
Publication Date
1-1-2010
Disciplines
Abstract
Harvesting energy from ambient vibration is a promising method for providing a continuous source of power for wireless sensor nodes. However, traditional energy harvesters are often derived from resonant linear oscillators which are capable of providing sufficient output power only if the dominant frequency of input vibrations closely matches the device resonant frequency. The limited scope of such devices has sparked an interest in the use of nonlinear oscillators as mechanisms for broadband energy harvesting. In this study, we investigate the harvesting performance of an electromagnetic harvester sustaining oscillations through the phenomena of magnetic levitation. The nonlinear behavior of the device is effectively modeled by Duffing’s equation, and direct numerical integration confirms the broadband frequency response of the nonlinear harvester. The nonlinear harvester’s power generation capabilities are directly compared to a linear electromagnetic harvester with similar dynamic parameters. Experimental testing shows that the presence of both high and low amplitude solutions for the nonlinear energy harvester results in a tendency for the oscillator to remain in a low energy state for non-harmonic vibration inputs, unless continuous energy impulses are provided. We conclude by considering future applications and improvements for such nonlinear devices.
Comments

© 2010 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

This article was published in Energy Harvesting and Storage: Materials, Devices, and Applications, Proceedings of SPIE, vol. 7683, 76830Y and may be found here.

Citation Information
Christopher Lee, David Stamp, Nitin Kapania and José Oscar Mur-Miranda. "Harvesting Vibration Energy Using Nonlinear Oscillations of an Electromagnetic Inductor" (2010)
Available at: http://works.bepress.com/joseoscar_mur-miranda/5/