An Impact-Based Frequency Up-Converting Hybrid Vibration Energy Harvester for Low Frequency Application

Xu, Zhenlong; Wang, Wen; Xie, Jin; Xu, Zhonggui; Zhou, Maoying; Hong, Yang

doi:10.3390/en10111761

Cited by 14 publications

(9 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The induced electromotive force produced with a magnetic flux through coils varies according to Faraday’s law. To improve the energy-conversion efficiency and increase the power density of an energy harvester, the hybrid energy harvester using both piezoelectric and electromagnet conversion mechanisms has received great attention [ 198 , 199 , 200 , 201 , 202 , 203 , 204 ]. Hybrid piezoelectric–electromagnetic energy harvesters are divided into two groups, according to the number of electromagnetic units.…”

Section: Hybrid Piezoelectric–electromagnetic Energy Harvestersmentioning

confidence: 99%

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

Jiang

Liu

Feng³

et al. 2021

Micromachines

View full text Add to dashboard Cite

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.

show abstract

Section: Hybrid Piezoelectric–electromagnetic Energy Harvestersmentioning

confidence: 99%

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

Jiang

Liu

Feng³

et al. 2021

Micromachines

View full text Add to dashboard Cite

show abstract

“…Here only the first modes of two cantilevered beams are considered. Based on the linear piezoelectric equations, Euler–Bernoulli beam theory, and Faraday’s law [27,28], the electromechanical coupling model of the MHEH subjected to harmonic excitation is expressed as M1r¨1+C1r˙1+false(K1+Knormalmx1false)r1−θpV1−Fnormalmz=−μ1M1u¨bM2r¨2+C2r˙2+false(K2−Knormalmx2false)r2+θeI2+Fmz=−μ2M2u¨bθpr˙1+CpV˙1+V1/R1=0−θer˙2+LcI…”

Section: Modelingmentioning

confidence: 99%

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

Hong

Zhang³

et al. 2019

Sensors

Self Cite

View full text Add to dashboard Cite

The approach to improve the output power of piezoelectric energy harvester is one of the current research hotspots. In the case where some sources have two or more discrete vibration frequencies, this paper proposed three types of magnetically coupled multi-frequency hybrid energy harvesters (MHEHs) to capture vibration energy composed of two discrete frequencies. Electromechanical coupling models were established to analyze the magnetic forces, and to evaluate the power generation characteristics, which were verified by the experimental test. The optimal structure was selected through the comparison. With 2 m/s2 excitation acceleration, the optimal peak output power was 2.96 mW at 23.6 Hz and 4.76 mW at 32.8 Hz, respectively. The superiority of hybrid energy harvesting mechanism was demonstrated. The influences of initial center-to-center distances between two magnets and length of cantilever beam on output power were also studied. At last, the frequency sweep test was conducted. Both theoretical and experimental analyses indicated that the proposed MHEH produced more electric power over a larger operating bandwidth.

show abstract

“…A vibration-based energy harvester can convert directly vibration energy into electricity via piezoelectric transduction, which owns the enormous advantages of replacing or recharging battery for the sake of sustainably driving low-power monitoring sensor or wireless transmitter usually placed at hard-to-access location for their entire operational life [1][2][3][4][5][6]. The conversion mechanisms of vibration energy-to-electricity mainly consist of piezoelectric [7][8][9], electromagnetic [10,11], electrostatic [12], and triboelectric transduction [13], among which piezoelectric transduction has obvious superiority over the others, for example simple structure and high energy density; thus, it has garnered much interest academically and commercially [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Performance of a Piezoelectric Energy Harvester System for Concurrent Flutter and Vortex-Induced Vibration

et al. 2020

View full text Add to dashboard Cite

This paper proposes a novel and efficient energy harvester (EH) system, for capturing simultaneously flutter and vortex-induced vibration. There exists a coupling effect between flexible spring energy harvester (FSEH) and cantilever beam energy harvester (CBEH) in aerodynamic response and output characteristic. Many prototypes of the harvester were manufactured to explore the coupling effect in a wind tunnel. The experimental results demonstrate that FSEH is mainly subjected to flutter-induced vibration and CBEH undergoes vortex-induced vibration. Disturbance of FSEH first takes place, a limited oscillation cycle then occurs, and chaos ultimately happens as airflow velocity increase. Root mean square voltages are more than 11 V for FSEH at beyond 10.52 m/s, which shows the better output performance over the existing harvesters. Vibration response and output voltage of various harvesters are mutually enhanced with each other. An enhancing ratio for FSEH-130-25 is up to 69.6% over FSEH-130-0, while the enhancing ratio for CBEH-130-30 is 198.3% compared to CBEH-0-30. Field application testing manifests that discharging time to power the pedometer is almost twice as long as the charging one for FSEH-130-25 at 14.48 m/s. The current research offers a suggestive guidance for promoting future practical application in micro airfoil aircrafts.

show abstract

An Impact-Based Frequency Up-Converting Hybrid Vibration Energy Harvester for Low Frequency Application

Cited by 14 publications

References 25 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

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

Enhancing Performance of a Piezoelectric Energy Harvester System for Concurrent Flutter and Vortex-Induced Vibration

Contact Info

Product

Resources

About