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- Title
Performance analysis of multi-point excitations to piezoelectric elements in enhanced power harvesting.
- Authors
Yadav, Nitin; Kumar, Rajesh
- Abstract
Piezoelectric materials are widely used in green energy harvesting systems. They generate electric potential on deformation due to force or vibration. There could be many ways to enhance the power output from piezoelectric such as by improving its material, circuitry and regulating the applied excitation force. In the present work, the structure that applies the force on the piezoelectric element in a distributed manner is studied. These structures are basically the devices to apply force in a particular distribution and pattern. A total of four types of structures (single-pointed, truncated, flat, and multipoint) have been used for pressurizing the piezoelectric element. The analysis is first made by simulations using the finite element method (FEM). Further, the experiments are conducted on all four structures in the laboratory environment. The results from simulation and experimentation revealed that the five-pointed structure produces the maximum output which is followed by the truncated structure. The use of a multi-pointed tapping structure produces a maximum power of 188.4 microwatts from the test piezoelectric element which is approximately 60% more than that when a single point tapping structure is used for the purpose. This study is useful in those applications where the energy of mechanical force or system vibration is to be recovered which is otherwise going to be a waste.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 20, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-10919-4