4.6 Article

Multi-Objective Topology Optimization of a Broadband Piezoelectric Energy Harvester

Journal

MICROMACHINES
Volume 14, Issue 2, Pages -

Publisher

MDPI
DOI: 10.3390/mi14020332

Keywords

topology optimization; broadband energy harvesting; piezoelectric energy harvesting

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In recent years, topology optimization has been proven to be the cutting-edge technology in mechanical structure design, while energy harvesting has gained significant attention in both research and industry. This work presents a novel topology optimization approach for a multi-resonant piezoelectric energy-harvester device, aiming to develop a broadband design that can generate constant power output over a range of frequencies, ensuring reliable operation under changing environmental conditions. The optimization results suggest a promising design with satisfactory frequency characteristics.
In recent years, topology optimization has proved itself to be state of the art in the design of mechanical structures. At the same time, energy harvesting has gained a lot of attention in research and industry. In this work, we present a novel topology optimization of a multi-resonant piezoelectric energy-harvester device. The goal is to develop a broadband design that can generate constant power output over a range of frequencies, thus enabling reliable operation under changing environmental conditions. To achieve this goal, topology optimization is implemented with a combined-objective function, which tackles both the frequency requirement and the power-output characteristic. The optimization suggests a promising design, with satisfactory frequency characteristics.

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