期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2019
卷号：13
期号：3
页码：76-85
DOI：10.12913/22998624/110175
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：In the present era, the renewable sources of energy, e.g., piezoelectric materials are in great demand. They play avital role in the feld of micro-electromechanical systems, e.g., sensors and actuators. The cantilever-based piezoelectric energy harvesters are very popular because of their high performance and utilization. In this researchwork, an energy harvester model based on a cantilever beam with bimorph PZT-5A, having a substrate layer ofstructural steel, was presented. The proposed energy scavenging system, designed in COMSOL Multiphysics,was applied to analyze the electrical output as a function of excitation frequencies, load resistances and accelerations. Analytical modeling was employed to measure the output voltage and power under pre-defned conditionsof acceleration and load resistance. Experimentation was also performed to determine the relationship betweenindependent and output parameters. Energy harvester is capable of producing the maximum power of 1.16 mWat a resonant frequency of 71 Hz under 1g acceleration, having load resistance of 12 kΩ. It was observed that acceleration and output power are directly proportional to each other. Moreover, the investigation conveys that theexperimental results are in good agreement with the numerical results. The maximum error obtained between theexperimental and numerical investigation was found to equal 4.3%.
关键词：piezoelectric; micro-electromechanical systems; energy harvesting; microsystems; bimorph
