Smart design selftuning piezoelectric energy harvester intended for gas turbines

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

物理学;能源学

Staaf, L.G.H.^1 ; Köhler, E.^1 ; Soeiro, M.^1 ; Lundgren, P.^1 ; Enoksson, P.^1

Department of Microtechnology and Nanoscience, Chalmers University of Technology, S-Gothenburg

412 96, Sweden^1

关键词: 3 dB bandwidth;    High temperature;    Piezoelectric energy harvesters;    Piezoelectric energy harvesting;    Piezoelectric harvester;    Selftuning;    Simulations and measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/660/1/012125/pdf
DOI  :  10.1088/1742-6596/660/1/012125

来源: IOP

【 摘 要 】

Piezoelectric energy harvesting on a gas turbine implies constraints like high temperature tolerance, size limitation and a particular range of vibrations to utilise. In order to be able to operate under these conditions a harvester needs to be small and efficient and to respond to the appropriate range of frequencies. We present the design, simulation and measurements for a clamped-clamped coupled piezoelectric harvester with a free-sliding weight which adds self-tuning for improved response within the range of vibrations from the gas tufbine. We show a peak open circuit voltage of 11.7 V and a 3dB bandwidth of 12 Hz.