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

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Hoffmann, D.^1 ; Folkmer, B.^1 ; Manoli, Y.^1,2

HSG-IMIT-Institute of Micromachining and Information Technology, Wilhelm- Schickard-Str.10', Villingen-Schwenningen

78052, Germany^1

Department of Microsystems Engineering-IMTEK, University of Freiburg, Germany^2

关键词: Conversion mechanism;    Coupled systems;    Energy Harvester;    Energy harvesting systems;    Experimental analysis;    Linear reference systems;    Monostable system;    Nonlinear regions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012134/pdf
DOI  :  10.1088/1742-6596/557/1/012134

来源: IOP

【 摘 要 】

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.