Design and Analysis of a Magnetically Coupled Multi-Frequency Hybrid Energy Harvester

Xu, Zhenlong; Hong, Yang; Zhang, Hao; Ci, Huawei; Zhou, Maoying; Wang, Wen; Meng, Aihua

doi:10.3390/s19143203

Cited by 11 publications

(16 citation statements)

References 29 publications

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“…Xu et al proposed three types of magnetically coupled hybrid energy harvesters that captured vibrational energy at two discrete frequencies. The superiority of this hybrid energy harvester was demonstrated [ 210 ] ( Figure 18 c). The device contained a typical nonlinear harvester with magnetically coupled dual beams.…”

Section: Hybrid Piezoelectric–electromagnetic Energy Harvestersmentioning

confidence: 99%

“…Therefore, some harvesters are designed for harvesting energy from broadband frequency vibrations. For example, the harvesters developed by Xu et al [ 209 ] and Rajarathinam et al [ 210 ] captured energy with two discrete frequencies. Moreover, some nonlinear technologies, such as frequency upconversion, magnetic tuning, and multistable can be applied to hybrid piezoelectric–electromagnetic harvester to enhance the energy harvesting performance.…”

Section: Hybrid Piezoelectric–electromagnetic Energy Harvestersmentioning

confidence: 99%

“…( b ) A 2-DOF system (reproduced with permission from [ 209 ]; published by Elsevier, 2017). ( c ) A multifrequency hybrid harvester (reproduced with permission from [ 210 ]; published by MDPI, 2019). ( d ) A bidirectional harvester (reproduced with permission from [ 211 ]; published by Elsevier, 2018).…”

Section: Figurementioning

confidence: 99%

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A Review of Piezoelectric Vibration Energy Harvesting with Magnetic Coupling Based on Different Structural Characteristics

Jiang

Liu

Feng³

et al. 2021

Micromachines

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Piezoelectric vibration energy harvesting technologies have attracted a lot of attention in recent decades, and the harvesters have been applied successfully in various fields, such as buildings, biomechanical and human motions. One important challenge is that the narrow frequency bandwidth of linear energy harvesting is inadequate to adapt the ambient vibrations, which are often random and broadband. Therefore, researchers have concentrated on developing efficient energy harvesters to realize broadband energy harvesting and improve energy-harvesting efficiency. Particularly, among these approaches, different types of energy harvesters adopting magnetic force have been designed with nonlinear characteristics for effective energy harvesting. This paper aims to review the main piezoelectric vibration energy harvesting technologies with magnetic coupling, and determine the potential benefits of magnetic force on energy-harvesting techniques. They are classified into five categories according to their different structural characteristics: monostable, bistable, multistable, magnetic plucking, and hybrid piezoelectric–electromagnetic energy harvesters. The operating principles and representative designs of each type are provided. Finally, a summary of practical applications is also shown. This review contributes to the widespread understanding of the role of magnetic force on piezoelectric vibration energy harvesting. It also provides a meaningful perspective on designing piezoelectric harvesters for improving energy-harvesting efficiency.

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Section: Hybrid Piezoelectric–electromagnetic Energy Harvestersmentioning

confidence: 99%

Section: Hybrid Piezoelectric–electromagnetic Energy Harvestersmentioning

confidence: 99%

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A Review of Piezoelectric Vibration Energy Harvesting with Magnetic Coupling Based on Different Structural Characteristics

Jiang

Liu

Feng³

et al. 2021

Micromachines

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show abstract

“…Meanwhile, 2.82 mW was contributed by the piezoelectric generator at 25.6 Hz which was 833% higher than its individual performance! Xu et al [125] then continued to explore the proposed energy harvester's structure and reported that 2.96 mW and 4.76 mW were generated at 23.6 Hz and 32.8 Hz, respectively, with the same amount of excitation amplitude. Li et al [126] proposed another magnetically coupled hybrid device.…”

Section: Hybrid Configurationmentioning

confidence: 99%

Comprehensive Review on Effective Strategies and Key Factors for High Performance Piezoelectric Energy Harvester at Low Frequency

Talib¹,

Salleh²,

Youn³

et al. 2019

IJAME

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In the past decade, there has been rapid development in piezoelectric energy harvester due to its limited application and low output power. This paper critically reviews the strategies implemented to improve the power density for low-frequency applications. These strategies include piezoelectric material selection as well as optimisations of shape, size and structure. The review also focuses on the recent advances in multi-modal, nonlinear and multi-directional energy harvesting. Based on the comprehensive summary of the normalised power density at 1g acceleration, it was found that most works fell in the second quadrant of low frequency and high power density. The maximum value was around 1mW/mm3 /g. Adding an extension of beam or spring to the conventional piezoelectric beam could enhance the normalised power density dramatically. Additionally, the multi-modal energy harvester exhibits broader bandwidth when its multiple resonance peaks get closer. The findings indicate that the anticipated performance of a piezoelectric harvester can be attained by achieving the trade-off between output power and bandwidth. To achieve high performance at low frequency, the following factors are essential: excellent material characteristics optimised geometry for high strain energy density, excellent flexibility, high excitation amplitude and broad bandwidth.

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“…A Multifrequency VSEHH 59 consisted of two cantilever beams facing each other. Both cantilever beams contained magnets as proof masses which oscillate in wound coils located at the bottom of the harvester.…”

Section: Introductionmentioning

confidence: 99%

A vibration‐based electromagnetic and piezoelectric hybrid energy harvester

Khan

2020

Int J Energy Res

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Summary This work presents the fabrication and testing of a vibration‐based single energy hybrid harvester (VSEHH). Electromagnetic and piezoelectric transduction mechanisms are utilized for energy extraction in the developed harvester. Electromagnetic portion of the device composed of a permanent magnet, planar coil and wound coil, however, for piezoelectric portion polyvinylidene difluoride (PVDF) membrane is used. In the harvester the PVDF membrane having the magnet is kept loose in order to exploit the spring softening nonlinearity. At lower base excitation levels (less than 0.5g) the response of the VSEHH is linear, however, from 0.5 to 2.5g the harvester exhibits spring softening nonlinearity and at acceleration levels greater than 2.5g, the spring hardening nonlinearity is invoked. Because of nonlinear behavior of the harvester, the shift of resonant frequency, the sudden jump‐up and jump‐down phenomena result in the enhancement of the harvester's frequency bandwidth. Under sinusoidal excitation and at 123 Hz frequency and 4g acceleration, the electromagnetic portion of the harvester produced 40.6 mV load voltage and 212.7 μW with planar coil and 73.5 mV load voltage and 319.1 μW power with wound coil. Moreover, under the same vibrations condition a load voltage of 2930 mV and power of 57.6 μW is generated by the piezoelectric portion of the harvester. Collectively, the harvester is capable of producing a power of 589.4 μW and a power density of 334.13 μW/cm3. Furthermore, when subjected to broadband random vibrations, two central frequency peaks are produced, one is due to spring softening and the other corresponds to the spring hardening of the membrane.

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Design and Analysis of a Magnetically Coupled Multi-Frequency Hybrid Energy Harvester

Cited by 11 publications

References 29 publications

A Review of Piezoelectric Vibration Energy Harvesting with Magnetic Coupling Based on Different Structural Characteristics

A Review of Piezoelectric Vibration Energy Harvesting with Magnetic Coupling Based on Different Structural Characteristics

Comprehensive Review on Effective Strategies and Key Factors for High Performance Piezoelectric Energy Harvester at Low Frequency

A vibration‐based electromagnetic and piezoelectric hybrid energy harvester

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