Experimental Analysis of a Coupled Energy Harvesting System with Monostable and Bistable Configuration

In this paper we present experimental results from an energy harvesting system with two coupled energy harvesters. The energy conversion mechanism of the two coupled energy harvesters is based on the electromagnetic principle. The coupling is generated by two magnets in a repulsive arrangement. In t...

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Bibliographic Details
Published in:Journal of physics. Conference series 2014-01, Vol.557 (1), p.12134-5
Main Authors: Hoffmann, D, Folkmer, B, Manoli, Y
Format: Article
Language:English
Subjects:
Configurations
Direct power generation
Energy conversion
Energy harvesting
Harvesters
Joining
Magnets
Nonlinearity
Physics
Reference systems
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Summary:In this paper we present experimental results from an energy harvesting system with two coupled energy harvesters. The energy conversion mechanism of the two coupled energy harvesters is based on the electromagnetic principle. The coupling is generated by two magnets in a repulsive arrangement. In this manner a bistable configuration can be obtained if the gap between the magnets is sufficiently small. We demonstrate that the total power output can be increased in comparison to a linear reference system, if specific conditions are fulfilled. In this respect, the highest power output occurs in the nonlinear region of a monostable system configuration, mostly near the transition to a bistable configuration. On the other hand, the results also indicate, that a bistable operating mode does not necessarily enhance the power output of the coupled system.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/557/1/012134