Smart design selftuning piezoelectric energy harvester intended for gas turbines

[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.

[发布机构] Department of Microtechnology and Nanoscience, Chalmers University of Technology, S-Gothenburg; 412 96, Sweden^1

[效力级别] 能源学

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