Modeling and experiment of vibro-impact vibration energy harvester based on a partial interlayer-separated piezoelectric beam

Cao, Dongxing; Xia, Wei; Guo, Xiang; Lai, Shih-Kung

doi:10.1177/1045389x20966057

Cited by 13 publications

(5 citation statements)

References 46 publications

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“…Wu et al (2014) designed a two-degree-of-freedom nonlinear harvester and demonstrated the proposed scheme can achieve wider bandwidth between two natural frequencies. Cao et al (2021) designed a vibro-impact piezoelectric energy harvester and obtained the broadband amplitude-frequency response curve of bimodal by using an approximate analytical method. Jiang et al (2022) explored a novel one-to-one internal resonance to scavenge flow energy from vortex-induced vibrations, the mechanism of synchronous oscillations was introduced by the amplitude-frequency relationship.…”

Section: Introductionmentioning

confidence: 99%

Broadband energy harvesting in a two-degree-of-freedom nonlinear system without internal resonance

Zhang,

Yang,

Jiang

et al. 2023

Journal of Intelligent Material Systems and Structures

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In this paper, we propose a novel two-degree-of-freedom (TDOF) nonlinear energy harvester without internal resonance to realize broadband harvesting characteristic. To show the performance, a TDOF nonlinear electromagnetic harvester is designed. The electromechanical coupling system is established and solved by adopting the harmonic balance method. The modulation equations are constructed, the first-order harmonic solutions of the system are obtained and the frequency response curves of the displacement and current are plotted. The advantage of the proposed harvester is compared to the conventional single-degree-of-freedom (SDOF) nonlinear model and the corresponding TDOF linear system, the results achieve that the proposed scheme can enhance the bandwidth of the harvesting energy. Furthermore, the influences of system parameters on the response are discussed. The accuracy of the first-order harmonic results is revealed by numerical simulations. To further demonstrate the accuracy of analytical solutions, the finite element simulation is constructed in ANSYS finite element analysis (FEA) software. The performance predictions from the analytical solutions are compared with results from FEA. It is convincingly demonstrated that periodic solutions have a degree of good consistency for the behavior of frequency response curves.

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Section: Introductionmentioning

confidence: 99%

Broadband energy harvesting in a two-degree-of-freedom nonlinear system without internal resonance

Zhang,

Yang,

Jiang

et al. 2023

Journal of Intelligent Material Systems and Structures

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“…Numerous technical applications use vibro-impact, including cutting and grinding equipment, pile-driving machines, turbomachinery, frequent rubbing of rotor blades and stators, and hand-held percussion devices [ 59 ]. Several studies investigated triboelectric and electrostatic effects utilizing vibro-impact structures and achieved higher bandwidth compared to the nonimpact harvesters [ 60 ]. The vibro-impact of multidegrees-of-freedom systems increased the operational bandwidth [ 51 , 61 , 62 , 63 , 64 , 65 , 66 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Bistability for a Wider Bandwidth in Vibro-Impact Triboelectric Energy Harvesters

Qaseem

Ibrahim

2023

Micromachines

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Mechanical energy from vibrations is widespread in the ambient environment. It may be harvested efficiently using triboelectric generators. Nevertheless, a harvester’s effectiveness is restricted because of the limited bandwidth. To this end, this paper presents a comprehensive theoretical and experimental investigation of a variable frequency energy harvester, which integrates a vibro-impact triboelectric-based harvester and magnetic nonlinearity to increase the operation bandwidth and improve the efficiency of conventional triboelectric harvesters. A cantilever beam with a tip magnet was aligned with another fixed magnet at the same polarity to induce a nonlinear magnetic repulsive force. A triboelectric harvester was integrated into the system by utilizing the lower surface of the tip magnet to serve as the top electrode of the harvester, while the bottom electrode with an attached polydimethylsiloxane insulator was placed underneath. Numerical simulations were performed to examine the impact of the potential wells formed by the magnets. The structure’s static and dynamic behaviors at varying excitation levels, separation distance, and surface charge density are all discussed. In order to develop a variable frequency system with a wide bandwidth, the system’s natural frequency varies by changing the distance between the two magnets to reduce or magnify the magnetic force to achieve monostable or bistable oscillations. When the system is excited by vibrations, the beams vibrate, which causes an impact between the triboelectric layers. An alternating electrical signal is generated from a periodic contact-separation motion between the harvester’s electrodes. Our theoretical findings were experimentally validated. The findings of this study have the potential to pave the way for the development of an effective energy harvester that is capable of scavenging energy from ambient vibrations across a broad range of excitation frequencies. The frequency bandwidth was found to increase by 120% at threshold distance compared to the conventional energy harvester. Nonlinear impact-driven triboelectric energy harvesters can effectively broaden the operational frequency bandwidth and enhance the harvested energy.

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“…One of the effective ways to improve the output performance of PVEH is to match its operating frequency with the ambient frequency range. However, this general linear piezoelectric energy harvesting system is commonly limited to a narrow frequency bandwidth [9]- [11]. When facing the above dilemma, various performance enhancement techniques have been proposed and studied to help traditional PVEH achieve broadband bandwidth and improve energy harvesting efficiency, mainly including multimodal [12], [13], frequency tuning [14]- [16], frequency up conversion [17]- [20] and nonlinear techniques [21]- [25].…”

Section: Introductionmentioning

confidence: 99%

Development and Optimization of a Two-Degree-of-Freedom Piezoelectric Harvester Based on Parallel Cantilever Structure With Magnetic Coupling

Hu,

Ding,

Wei

et al. 2023

IEEE Access

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Vibration energy harvesting using the piezoelectric effect has recently attracted significant attention from scholars. The main concern in the research of piezoelectric vibration energy harvesters is to improve the operating bandwidth and output power in low-frequency vibration environments with random and time-varying nature. A novel piezoelectric vibration energy harvester (PVEH) with three parallel cantilevers and repulsive magnet pair structures is proposed in this work to achieve the above goal. The proposed PVEH has the potential to take full advantage of the synergistic effect of the multi-frequency and magnetic nonlinear performance enhancement techniques. The characteristics of the harvester are systematically studied by theoretical modeling, simulation, and experiments. The influence of the critical parameters (i.e. the tip mass of the inner beam, the tip mass of the outer beam, and the magnet spacing) on the output performance of the PVEH is discussed and optimized in detail, and then the internal mechanism of the proposed energy harvesting method based on multi-frequency and magnetic cooperation is revealed. The results show that the improvement rate of the output power of the fabricated prototype under the condition of first-order and second-order operating frequency reaches 23.35% and 38.10%, respectively, compared with the non-magnetic structure. Finally, the optimal configuration of the harvester (Mi=6.70 g, Mo=5.00 g, s=22 mm) obtains a maximum half-power bandwidth of 1.052 Hz and a maximum output power of 2.80 mW under 0.2g with 0.155 MΩ load resistance. The proposed energy harvesting system is expected to be a promising alternative to efficient vibration energy harvesters.

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Modeling and experiment of vibro-impact vibration energy harvester based on a partial interlayer-separated piezoelectric beam

Cited by 13 publications

References 46 publications

Broadband energy harvesting in a two-degree-of-freedom nonlinear system without internal resonance

Broadband energy harvesting in a two-degree-of-freedom nonlinear system without internal resonance

Magnetic Bistability for a Wider Bandwidth in Vibro-Impact Triboelectric Energy Harvesters

Development and Optimization of a Two-Degree-of-Freedom Piezoelectric Harvester Based on Parallel Cantilever Structure With Magnetic Coupling

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