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Research Paper | Electrical & Electronics Engineering | India | Volume 13 Issue 3, March 2024
Piezoelectric Energy Harvester Energy Conversion Performance, Strain Distribution and Efficiency Improvements in Two Clamped Configurations with Cantilever Configurations
T. Ramachandran [3] | Aruna Bansal
Abstract: The use of Piezoelectric energy harvesters in many low power sensing and electronics device requirement as self power device is increasing day by day. So, it?s very essential and important to improve the harvester energy conversion performance, strain distribution and increase the output power of the harvester so that the efficiency of the harvester can also be improved and increased. The way for improve the harvester generation voltage is depends on many factors, among them one way of approach is the uniform use of materials and balance with uniform strain stress imposed on the piezoelectric layer beam. Both of the approaches lead to improve the converter efficiency and also the requirements of the materials can be reduced by optimum use of the piezoelectric materials. The conventional cantilever arrangement with tip mass is not providing the uniform stress strain to the harvester but the strain is high near to tip mass and less to the fixed end of the harvester beam. The two clamped harvester beam in which the strain and the stress imposed on the energy harvester beam is more or less uniform. This paper focused on the comparisons between the cantilever piezoelectric energy generator performance with the clamped type configuration for the segmented and continuous cantilever piezoelectric layer beam configurations. In the cantilever beam with segmented harvester beam reduce the material requirements and provide the uniform strain stress spread to the harvester but still uniform strain distribution not present. The comparisons between the cantilever and clamped configuration proofs that the uniform stress strain achievement is more in clamed configuration and also the performance of the harvester improved and requirement of the piezoelectric materials reduced.
Keywords: Piezoelectric harvester, cantilever configurations, strain stress comparisons, performance analysis, voltage generation
Edition: Volume 13 Issue 3, March 2024,
Pages: 1365 - 1369