Watts-level road-compatible piezoelectric energy harvester for a self-powered temperature monitoring system on an actual roadway

Hwang, Wonseop; Kim, Kyung-Bum; Cho, Jae Yong; Yang, Chul–Su; Kim, Jung Hun; Song, Gyeong Ju; Song, Yewon; Jeon, Deok Hwan; Ahn, Jung Hwan; Hong, Seong Do; Kim, Jihoon; Lee, Tae Hee; Choi, Ji Young; Cheong, Haimoon; Sung, Tae Hyun

doi:10.1016/j.apenergy.2019.03.122

Cited by 63 publications

(16 citation statements)

References 18 publications

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“…Therefore, the question of how to harvest energy from the surrounding environment to power these devices, instead of simply using batteries, has attracted widespread attention [ 3 , 4 , 5 , 6 ]. There are many forms of energy in the natural environment, such as solar energy, wind energy, vibration energy and thermal energy [ 7 , 8 , 9 , 10 ], and the commonly used energy harvesting mechanisms include photoelectric, piezoelectric [ 11 , 12 ], electromagnetic [ 13 , 14 , 15 ], electrostatic [ 16 ] and triboelectric effects [ 17 , 18 ]. In particular, there are abundant vibration energy sources in the natural environment, most of which are low-frequency vibration [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

A Multi-Mode Broadband Vibration Energy Harvester Composed of Symmetrically Distributed U-Shaped Cantilever Beams

2021

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Using the piezoelectric effect to harvest energy from surrounding vibrations is a promising alternative solution for powering small electronic devices such as wireless sensors and portable devices. A conventional piezoelectric energy harvester (PEH) can only efficiently collect energy within a small range around the resonance frequency. To realize broadband vibration energy harvesting, the idea of multiple-degrees-of-freedom (DOF) PEH to realize multiple resonant frequencies within a certain range has been recently proposed and some preliminary research has validated its feasibility. Therefore, this paper proposed a multi-DOF wideband PEH based on the frequency interval shortening mechanism to realize five resonance frequencies close enough to each other. The PEH consists of five tip masses, two U-shaped cantilever beams and a straight beam, and tuning of the resonance frequencies is realized by specific parameter design. The electrical characteristics of the PEH are analyzed by simulation and experiment, validating that the PEH can effectively expand the operating bandwidth and collect vibration energy in the low frequency. Experimental results show that the PEH has five low-frequency resonant frequencies, which are 13, 15, 18, 21 and 24 Hz; under the action of 0.5 g acceleration, the maximum output power is 52.2, 49.4, 61.3, 39.2 and 32.1 μW, respectively. In view of the difference between the simulation and the experimental results, this paper conducted an error analysis and revealed that the material parameters and parasitic capacitance are important factors that affect the simulation results. Based on the analysis, the simulation is improved for better agreement with experiments.

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Section: Introductionmentioning

confidence: 99%

A Multi-Mode Broadband Vibration Energy Harvester Composed of Symmetrically Distributed U-Shaped Cantilever Beams

2021

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“…These advantages have led to the use of piezoelectricity in various energy harvesting applications, and their design studies-structural modifications and electric circuit designs-have been actively conducted during the last two decades [4,5]. Previous piezoelectric energy (PE) harvesting studies considered various dynamic energy sources, such as HVAC (heating, ventilation, and air conditioning) systems (outdoor condensing unit, duct, compressor, pipe, fan belt cage) [6][7][8], human motions (vibration [9,10] and shoe compression [11][12][13]), pavements (or tiles) [14][15][16][17], vibrating bridges [18], wind-induced motions [19][20][21], raindrops [22,23], tires [24], and even inside human bodies [25][26][27][28]. The aforementioned works developed numerical models for PE harvesters and performed design studies to reduce the development cost while satisfying the power requirement.…”

Section: Introductionmentioning

confidence: 99%

Design Scalability Study of the Γ-Shaped Piezoelectric Harvester Based on Generalized Classical Ritz Method and Optimization

2021

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This paper studies the design scalability of a -shaped piezoelectric energy harvester (EH) using the generalized classical Ritz method (GCRM) and differential evolution algorithm. The generalized classical Ritz method (GCRM) is the advanced version of the classical Ritz method (CRM) that can handle a multibody system by assembling its equations of motion interconnected by the constraint equations. In this study, the GCRM is extended for analysis of the piezoelectric energy harvesters with material and/or orientation discontinuity between members. The electromechanical equations of motion are derived for the PE harvester using GCRM, and the accuracy of the numerical simulation is experimentally validated by comparing frequency response functions for voltage and power output. Then the GCRM is used in the power maximization design study that considers four different total masses—15 g, 30 g, 45 g, 60 g—to understand design scalability. The optimized EH has the maximum normalized power density of 23.1 × 103 kg·s·m−3 which is the highest among the reviewed PE harvesters. We discuss how the design parameters need to be determined at different harvester scales.

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“…Vibration is one of the mechanical phenomena with high potential for energy harvesting because it is widespread and easily accessible. Walking [1], dancing [2] or using the vibrations produced by the road traffic or wind flow [3] are some examples of energy harvesting projects.…”

Section: Introductionmentioning

confidence: 99%

Frequency tunable, flexible and low cost piezoelectric micro-generator for energy harvesting

Scornec

Guiffard

Séveno

et al. 2020

Sensors and Actuators A: Physical

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The conversion of vibrations into electrical energy for powering low-power small electronic components has been investigated by researchers from different disciplines in the last decade. Among the possible mechanisms, piezoelectricity has received particular attention. In the field of low frequency cantileverbased vibration energy harvesters, the proof mass is essential in order to reduce the resonance frequency and increase the stress along the beam to increase the output power. In this work, a manufacturing process of a micro generator is proposed to easily modify and increase the dimensions of the cantilever, and thus tune its resonance frequency. The effect of the position of the mass on the performances of this flexible piezoelectric energy harvester is also studied. For a proof mass at 8 cm from clamping, we obtain a resonance frequency of 9.9 Hz, a maximum power of 127 μW against a resonance frequency of 16 Hz and a maximum power of 72 μW with a mass at 4 cm. This shows that the maximum power extracted varies in for a constant acceleration of 1 g (9.81 m/s 2 ), as expected theoretically. These ≅ 1 ! promising results show that the prototype can be considered for a low power application as an energy harvesting-based micro-generator.

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Watts-level road-compatible piezoelectric energy harvester for a self-powered temperature monitoring system on an actual roadway

Cited by 63 publications

References 18 publications

A Multi-Mode Broadband Vibration Energy Harvester Composed of Symmetrically Distributed U-Shaped Cantilever Beams

A Multi-Mode Broadband Vibration Energy Harvester Composed of Symmetrically Distributed U-Shaped Cantilever Beams

Design Scalability Study of the Γ-Shaped Piezoelectric Harvester Based on Generalized Classical Ritz Method and Optimization

Frequency tunable, flexible and low cost piezoelectric micro-generator for energy harvesting

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