Performance Analysis of Low-Frequency Piezoelectric Energy Harvesting Systems with Multiple Nonlinear Factors and Bidirectional Excitations
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Article number | 2650015 |
Journal / Publication | International Journal of Structural Stability and Dynamics |
Online published | 17 Oct 2024 |
Publication status | Online published - 17 Oct 2024 |
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Abstract
With the swift advancement of microelectronic technology and MEMS, piezoelectric energy harvesting technology has garnered escalating attention due to its eco-friendly and sustainable attributes. In this paper, a bimorph piezoelectric energy harvesting system considering multi-nonlinearity complex factors is devised, and the approximate analytical solutions for vertical displacement, output voltage, and output power of the entire system are derived. Owing to inherent nonlinear softening characteristic of material nonlinearity, the effective frequency bandwidth of the energy harvesting system is significantly broadened. The result indicates that under horizontal excitation ranging from 0.2 g to 0.3 g, the peak output voltage of the energy harvesting system with a frequency of 3.2254 Hz (open circuit) increases approximately by 7.9 times. At another frequency of 3.2054 Hz (short circuit), the peak output voltage amplitude is multiplied by approximately 6.5 times. Considering material nonlinearity, it can be concluded that the system energy harvesting efficiency at low frequency can be greatly improved. The numerical result obtained is not only more accurate, but it is also more consistent with real situations. This conclusion provides a theoretical basis for research and analysis of similar systems in low-frequency ranges. © World Scientific Publishing Company.
Research Area(s)
- Frequency bandwidth, low frequency, material nonlinearity, multi-nonlinearity, piezoelectric
Citation Format(s)
Performance Analysis of Low-Frequency Piezoelectric Energy Harvesting Systems with Multiple Nonlinear Factors and Bidirectional Excitations. / Xia, Guanghui; Zhang, Su; Liu, Mingrui et al.
In: International Journal of Structural Stability and Dynamics, 17.10.2024.
In: International Journal of Structural Stability and Dynamics, 17.10.2024.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review