Self-sufficient electronic control for nonlinear, frequency tunable, piezoelectric vibration harvesters

15th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Heller, S.^1 ; Neiss, S.^1 ; Kroener, M.^1 ; Woias, P.^1

Laboratory for Design of Microsystems, IMTEK, University of Freiburg, Georges-Koehler-Allee 102, Freiburg

79110, Germany^1

关键词: Control electronics;    Electronic controls;    Energy yields;    Piezoelectric vibration;    Softening effect;    Vibration energy harvesting;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/660/1/012024/pdf
DOI  :  10.1088/1742-6596/660/1/012024

来源: IOP

【 摘 要 】

Research in vibration energy harvesting focuses increasingly on nonlinear harvesters. In comparison to linear harvesters they show an inherent larger bandwidth through hardening or softening effects and higher conversion efficiency. A further increase of the bandwidth and thus a higher energy yield can be achieved by controlled tuning of such a nonlinear system. In this paper a self-sufficient tuning control electronic, which is directly powered by the harvester, is presented.