Experimental Investigation of Load Characteristics of Piezofilm-based Energy Harvester

2018 IEEE Electron Devices Kolkata Conference (EDKCON) Pub Date : 2018-11-01 DOI:10.1109/EDKCON.2018.8770502

P. Guin, A. Mallick, A. Roy

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引用次数: 3

Abstract

Harnessing and usability of electrical energy from piezofilm-based energy harvester is investigated. Three possible combinations such as parallel, series-parallel and series configurations of piezofilms are investigated for load carrying capability. A total of six mass loaded piezofilms are employed in this study. An artificial vibrator is used to simulate the ambient vibration to generate electrical energy from the piezofilms. A commercial passive converter is used to convert generated ac power into usable dc power. Load characteristics are obtained at different vibrating frequency for all the three configurations. Among these three configurations, experimentally it is found the parallel combination of the piezofilms is the best configuration as far power generation capability is concerned, even at low vibrating frequency. It is also noticed that, the peak power is obtained at almost equal load for the first two configurations while the same is found to be at larger load resistance for the last configuration. The possible reasons for differences in the load characteristics of the three configurations are discussed.

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基于压电薄膜的能量采集器负载特性实验研究

研究了压电薄膜能量采集器电能的利用和可用性。研究了压电薄膜并联、串并联和串联三种可能的组合形式的承载能力。本研究共使用了六种负载质量的压电薄膜。利用人工振动器模拟环境振动，使压电薄膜产生电能。商用无源变流器用于将产生的交流电转换成可用的直流电。得到了三种结构在不同振动频率下的载荷特性。在这三种构型中，实验发现，即使在低振动频率下，就发电能力而言，压电膜并联组合是最佳的构型。还注意到，前两种配置的峰值功率在几乎相等的负载下获得，而最后一种配置的峰值功率在较大的负载阻力下获得。讨论了三种结构负载特性差异的可能原因。

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2018 IEEE Electron Devices Kolkata Conference (EDKCON)

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