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Elastic-electro-mechanical modeling and analysis of piezoelectric metamaterial plate with a self-powered SCEC for vibration energy harvesting

Elastic-electro-mechanical modeling and analysis of piezoelectric metamaterial plate with a self-powered SCEC for vibration energy harvesting
Elastic-electro-mechanical modeling and analysis of piezoelectric metamaterial plate with a self-powered SCEC for vibration energy harvesting
Structural vibrations usually exist in the form of low frequency and broadband elastic waves, so cantilever-like harvesters are not appropriate due to space limitations and high quality factor. Piezoelectric metamaterial plate with local resonators (PMP-LR) has been explored to overcome it. However, how to model and analyze the whole energy harvesting system is still a challenge. In this paper, a self-powered synchronized charge extraction circuit is presented and connected to the PMP-LP as the interface circuit. An elastic-electro-mechanical model is built based on the Kirchhoff plate theory and equivalent impedance method, where equivalent impedance of the self-powered synchronized charge extraction circuit is first derived. Then the elastic-electro-mechanical model is numerically solved by using the Bloch theorem and wave finite element method. By numerical simulations, it is found that the synchronized charge extraction circuit has few effects on vibration bandgaps of the PMP-LR. While by inserting an inductor parallel with the clamped capacitor of the piezoelectric patch, we can see that a new dispersion curve is induced by the electrical resonance and the inductor is beneficial for low-frequency and broadband vibration energy harvesting. In particular, the inductor can greatly improve the harvesting performance when the resonant frequency is equal to the excitation frequency. In the end, experiments are done and the results are consistent with the numerical ones. Excitingly, the output voltage amplitude of the piezoelectric patch is enlarged about 200% after using the resonant inductor.
Vibration energy harvesting;, piezoelectric metamaterial plate;, local resonators;, elastic-electro-mechanical model;, self-powered synchronized charge extraction circuit with a resonant inductor
0888-3270
Chen, Zhongsheng
9893f775-a26a-4ebe-a4d9-d8224838fc9d
Xia, Yemei
02b834d1-4946-4677-bb0e-0d6017e57417
He, Jing
af7d329c-1d1f-4a84-82ec-b6d46fd822a2
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49
Wang, Gang
5ea02268-47c4-4078-b2d1-0f80ee401dc0
Chen, Zhongsheng
9893f775-a26a-4ebe-a4d9-d8224838fc9d
Xia, Yemei
02b834d1-4946-4677-bb0e-0d6017e57417
He, Jing
af7d329c-1d1f-4a84-82ec-b6d46fd822a2
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49
Wang, Gang
5ea02268-47c4-4078-b2d1-0f80ee401dc0

Chen, Zhongsheng, Xia, Yemei, He, Jing, Xiong, Yeping and Wang, Gang (2020) Elastic-electro-mechanical modeling and analysis of piezoelectric metamaterial plate with a self-powered SCEC for vibration energy harvesting. Mechanical Systems and Signal Processing, 143, [106824]. (doi:10.1016/j.ymssp.2020.106824).

Record type: Article

Abstract

Structural vibrations usually exist in the form of low frequency and broadband elastic waves, so cantilever-like harvesters are not appropriate due to space limitations and high quality factor. Piezoelectric metamaterial plate with local resonators (PMP-LR) has been explored to overcome it. However, how to model and analyze the whole energy harvesting system is still a challenge. In this paper, a self-powered synchronized charge extraction circuit is presented and connected to the PMP-LP as the interface circuit. An elastic-electro-mechanical model is built based on the Kirchhoff plate theory and equivalent impedance method, where equivalent impedance of the self-powered synchronized charge extraction circuit is first derived. Then the elastic-electro-mechanical model is numerically solved by using the Bloch theorem and wave finite element method. By numerical simulations, it is found that the synchronized charge extraction circuit has few effects on vibration bandgaps of the PMP-LR. While by inserting an inductor parallel with the clamped capacitor of the piezoelectric patch, we can see that a new dispersion curve is induced by the electrical resonance and the inductor is beneficial for low-frequency and broadband vibration energy harvesting. In particular, the inductor can greatly improve the harvesting performance when the resonant frequency is equal to the excitation frequency. In the end, experiments are done and the results are consistent with the numerical ones. Excitingly, the output voltage amplitude of the piezoelectric patch is enlarged about 200% after using the resonant inductor.

Text
MSSP Accepted Manuscript_Chen&Xiong - Accepted Manuscript
Restricted to Repository staff only until 16 March 2022.
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More information

Accepted/In Press date: 16 March 2020
e-pub ahead of print date: 27 March 2020
Keywords: Vibration energy harvesting;, piezoelectric metamaterial plate;, local resonators;, elastic-electro-mechanical model;, self-powered synchronized charge extraction circuit with a resonant inductor

Identifiers

Local EPrints ID: 439430
URI: http://eprints.soton.ac.uk/id/eprint/439430
ISSN: 0888-3270
PURE UUID: 98ee8353-0472-47cb-9e39-5de16ca5fd40
ORCID for Yeping Xiong: ORCID iD orcid.org/0000-0002-0135-8464

Catalogue record

Date deposited: 22 Apr 2020 16:32
Last modified: 07 Oct 2020 01:45

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