The Influence of Piezoelectric and Fin Material on Piezoelectric-mini wind turbine energy harvester
DOI:
https://doi.org/10.56904/j-gers.v3i1.78Keywords:
Energy Harvester, Ceramic Piezoelectric, PVDF Piezoelectric, Wind Turbine, VoltageAbstract
A piezoelectric device is an energy harvester by converting mechanical deflection into electrical output voltage. This research was conducted using an experimental method, where the bluff body is equipped in a wind tunnel at an angle of 40º, and a mini wind turbine as a contact area to generate collisions on the piezoelectric material coated with fins. The independent variables in this study include ceramic and PVDF piezoelectric materials, various fin materials such as paper, plastic, and aluminum. The piezoelectric material and mini wind turbine were installed in the wind tunnel with a wind speed of 9 m/s. Output voltage measurement was conducted using a data acquisition system, with settings performed for 60 seconds. The test results showed that the highest voltage from ceramic piezoelectric material with plastic fin material was obtained at 10.37 volts. The results also showed that the highest voltage from the PVDF piezoelectric material was obtained at 0.387 volts with the use of plastic fin material. Ceramic has a higher output voltage generate than PVDF due to several factors such as the piezoelectric coefficient, dielectric constant, polarization, domain structure, and mechanical rigidity. The stiffer and stronger polarization led to more efficient charge displacement resulting in higher voltage output. The best performance of plastic fins is attributed to their higher flexibility and ability to generate more stable and impactful contact with the piezoelectric surface during wind-driven collisions.
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