Investigative Study of the Effect of Damping and Stiffness Nonlinearities on an Electromagnetic Energy Harvester at Low-Frequency Excitations
Journal article
Uchenna Diala, Yunpeng Zhu and Rajintha Gunawardena 2024. Investigative Study of the Effect of Damping and Stiffness Nonlinearities on an Electromagnetic Energy Harvester at Low-Frequency Excitations. Machines. 12 (1), pp. 1-21. https://doi.org/10.3390/machines12010030
| Authors | Uchenna Diala, Yunpeng Zhu and Rajintha Gunawardena |
|---|---|
| Abstract | Ambient vibration energy is widely being harnessed as a source of electrical energy to drive low-power devices. The vibration energy harvester (VEH) of interest employs an electromagnetic transduction mechanism, whereby ambient mechanical vibration is converted to electrical energy. The limitations affecting the performance of VEHs, with an electromagnetic transduction structure, include its operational bandwidth as well as the enclosure-size constraint. In this study, an analysis and design of a nonlinear VEH system is conducted using the Output Frequency Response Function (OFRF) representations of the actual system model. However, the OFRF representations are determined from the Generalised Associated Linear Equation (GALE) decompositions of the system of interest. The effect of both nonlinear damping and stiffness characteristics, to, respectively, extend the average power and operational bandwidth of the VEH device, is demonstrated. |
| Keywords | ambient vibration energy; low-power devices; electromagnetic transduction structure |
| Year | 2024 |
| Journal | Machines |
| Journal citation | 12 (1), pp. 1-21 |
| Publisher | MDPI |
| ISSN | 2075-1702 |
| Digital Object Identifier (DOI) | https://doi.org/10.3390/machines12010030 |
| Web address (URL) | https://doi.org/10.3390/machines12010030 |
| Publisher's version | License File Access Level Open |
| Output status | Published |
| Publication dates | 01 Jan 2024 |
| Publication process dates | |
| Deposited | 14 Feb 2024 |
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