Dynamic and energetic characteristics of a bistable piezoelectric vibration energy harvester with an elastic magnifier

Wang, Guangqing; Liao, Wei-Hsin; Yang, Binqiang; Wang, Xuebao; Xu, Wei; Li, Xiuling

doi:10.1016/j.ymssp.2017.12.025

Cited by 123 publications

(54 citation statements)

References 23 publications

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“…One approach consists in exploiting several modes of vibration of the cantilever harvester (making use of segmented electrodes) [14] or of more complex structures, like L-shaped harvesters [15]. Another approach consists in making use of non-linear components like bi-stable cantilevers or ropes [16][17][18]. The possibility of widening the band of the cantilever harvester by increasing the number of degrees of freedom (DOFs) has been analyzed in some research.…”

Section: Introductionmentioning

confidence: 99%

Development of Piezoelectric Harvesters with Integrated Trimming Devices

et al. 2018

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Featured Application: Trimming devices integrated with the structural layer of the harvester are proposed for improving energy harvesting at low frequency and in the presence of periodic excitation with multiple harmonics. Abstract: Piezoelectric cantilever harvesters have a large power output at their natural frequency, but in some applications the frequency of ambient vibrations is different from the harvester's frequency and/or ambient vibrations are periodic with some harmonic components. To cope with these operating conditions harvesters with integrated trimming devices (ITDs) are proposed. Some prototypes are developed with the aid of an analytical model and tested with an impulsive method. Results show that a small trimming device can lower the main resonance frequency of a piezoelectric harvester of the same extent as a larger tip mass and, moreover, it generates at high frequency a second resonance peak. A multi-physics numerical finite element (FE) model is developed for predicting the generated power and for performing a stress-strain analysis of harvesters with ITDs. The numerical model is validated on the basis of the experimental results. Several configurations of ITDs are conceived and studied. Numerical results show that the harvesters with ITDs are able to generate relevant power at two frequencies, owing to the particular shape of the modes of vibration. The stress in the harvesters with ITDs is smaller than the stress in the harvester with a tip mass trimmed to the same frequency.

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Section: Introductionmentioning

confidence: 99%

Development of Piezoelectric Harvesters with Integrated Trimming Devices

et al. 2018

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“…The maximum measured output power was 6.76 mW when resistance load of 100 kΩ was applied at excitation frequency of 17.6 Hz. It is 26 times higher output power value compared to conventional energy harvester [16].…”

Section: Shock and Vibrationmentioning

confidence: 97%

Multifrequency Piezoelectric Energy Harvester Based on Polygon‐Shaped Cantilever Array

Mažeika

Čeponis

Yang

2018

Shock and Vibration

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This paper focuses on numerical and experimental investigations of a novel design piezoelectric energy harvester. Investigated harvester is based on polygon-shaped cantilever array and employs multifrequency operating principle. It consists of eight cantilevers with irregular design of cross-sectional area. Cantilevers are connected to each other by specific angle to form polygonshaped structure. Moreover, seven seismic masses with additional lever arms are added in order to create additional rotation moment. Numerical investigation showed that piezoelectric polygon-shaped energy harvester has five natural frequencies in the frequency range from 10 Hz to 240 Hz, where the first and the second bending modes of the cantilevers are dominating. Maximum output voltage density and energy density equal to 50.03 mV/mm 3 and 604 J/mm 3 , respectively, were obtained during numerical simulation. Prototype of piezoelectric harvester was made and experimental investigation was performed. Experimental measurements of the electrical characteristics showed that maximum output voltage density, energy density, and output power are 37.5 mV/mm 3 , 815.16 J/mm 3 , and 65.24 W, respectively.

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“…The conversion of mechanical energy (from waste vibrations) into electrical energy can be done by electromagnetic [36][37][38][39], piezoelectric [33,40], or electrostatic [41][42][43] mechanisms of transduction. The piezoelectric transduction mechanism is the most efficient mechanism for microelectronics [44], wireless sensors [45], and nanoelectronics [46] because they are easy to fabricate [47,48] and are able to harvest energy at variable frequencies [49][50][51]. This phenomenon was discovered by Pierre and Jacques Curie in 1880 [52] as having a direct effect (i.e., conversion of mechanical energy to electrical energy [53]), as expressed in Equation (1) [54] and a converse effect (i.e., the conversion of electrical energy to mechanical energy [55]), as expressed in Equation (2) [56].…”

Section: Introductionmentioning

confidence: 99%

“…This harvesting mechanism is dependent on the medium of interaction [89][90][91][92]; that is, the transformation of kinetic energy to the PZT transducer [93][94][95]. These media may be mechanical vibrations [51,96,97], fluid-structure interaction [98,99], and thermal interaction [100,101]. In this review paper, PEH mechanisms based on fluid-structure interaction, human based interaction, and vibration are studied.…”

Section: Introductionmentioning

confidence: 99%

A Review on Mechanisms for Piezoelectric-Based Energy Harvesters

2018

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From last few decades, piezoelectric materials have played a vital role as a mechanism of energy harvesting, as they have the tendency to absorb energy from the environment and transform it to electrical energy that can be used to drive electronic devices directly or indirectly. The power of electronic circuits has been cut down to nano or micro watts, which leads towards the development of self-designed piezoelectric transducers that can overcome power generation problems and can be self-powered. Moreover, piezoelectric energy harvesters (PEHs) can reduce the need for batteries, resulting in optimization of the weight of structures. These mechanisms are of great interest for many researchers, as piezoelectric transducers are capable of generating electric voltage in response to thermal, electrical, mechanical and electromagnetic input. In this review paper, Fluid Structure Interaction-based, human-based, and vibration-based energy harvesting mechanisms were studied. Moreover, qualitative and quantitative analysis of existing PEH mechanisms has been carried out.

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Dynamic and energetic characteristics of a bistable piezoelectric vibration energy harvester with an elastic magnifier

Cited by 123 publications

References 23 publications

Development of Piezoelectric Harvesters with Integrated Trimming Devices

Development of Piezoelectric Harvesters with Integrated Trimming Devices

Multifrequency Piezoelectric Energy Harvester Based on Polygon‐Shaped Cantilever Array

A Review on Mechanisms for Piezoelectric-Based Energy Harvesters

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