Performance Enhancement of Piezoelectric Energy Harvesters Using Multilayer and Multistep Beam Configurations

Sriramdas, Rammohan; Chiplunkar, Sanketh; Cuduvally, Ramya; Pratap, Rudra

doi:10.1109/jsen.2014.2387882

Cited by 63 publications

(16 citation statements)

References 17 publications

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“…Output voltage of a piezoelectric crystal can be calculated by using the below formula [14], Where V o is the output voltage, P is the pressure applied, g is the acceleration due to gravity, h is the height of the crystal.…”

Section: Formulationmentioning

confidence: 99%

Electric Footprint

Bhatia¹,

Berde²,

Pingle³

et al. 2020

IJRESM

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We live in a world marred by pollution. Every day, the hazardous effects of fossil fuels and other bio-hazardous energy sources continue to upset our ecosystems and harm the biosphere. We must find cleaner, more sustainable sources of power. As such, we have tapped into other sources of renewable energy through the use of solar panels, hydroelectric dams and wind turbines, to name a few. However, there is one potential provider of energy that we have yet to fully explore: the human body. The unused kinetic force generated by a human being can be converted into storable electricity. Individually, this may be but a drop in the ocean compared to the vast amount of electricity generated from other devices. But, with enough participants, it can become significant enough to displace the use of harmful fuels in many public locations. This goal forms the basis of the project.

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Section: Formulationmentioning

confidence: 99%

Electric Footprint

Bhatia¹,

Berde²,

Pingle³

et al. 2020

IJRESM

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show abstract

“…At a certain time, the sonar forms a beam with one lobe. For the single target studied in [6–9], the positioning and identification accuracies can be improved by using a different beam‐formation method. If there is only one target, the fixed beam‐directing template mentioned in [2] can be used to select the beam direction and complete the target exploration; if many targets exist in the fan zone, it is necessary to carry out the secondary beam‐direction allocation process.…”

Section: Problem Statementmentioning

confidence: 99%

“…If the beam is allocated towards only the highest‐probability target, the real target may be missed, as the highest‐probability target may be a decoy. Most recent studies on target identification [6], location [7] and sonar‐efficacy improvement [8, 9] are mainly concerned with the angle of beam formation. There are few publications on how to carry out beam allocation after the beam has been formed.…”

Section: Introductionmentioning

confidence: 99%

Adaptive beam‐allocation method based on lobe efficacy

Chen

et al. 2018

IET Radar, Sonar & Navigation

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“…Piezoelectric elements have been widely utilized in vibration energy harvesting so far 24 – 26 , however, the low power and low efficiency of the PZT based energy harvesters is still a main challenge. Enhancement of these limitations is mainly attained through material science by changing the composition of piezoelectric elements 27 , 28 or by structural solutions 29 , 30 consist of metamaterials.…”

Section: Introductionmentioning

confidence: 99%

Study in circular auxetic structures for efficiency enhancement in piezoelectric vibration energy harvesting

Eghbali

Younesian

Moayedizadeh

et al. 2020

Sci Rep

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Piezoelectric (PZT) components are one of the most popular elements in vibration sensing and also energy harvesting. They are very well established, cost effective and available in different geometries however there are still several challenges in their application particularly in vibration energy harvesting. They are normally narrow-band elements and work in high-frequency range. Their efficiency and power extraction density are also generally low compared with different electromagnetic techniques. Auxetic structures are proposed here to enhance efficiency of the piezoelectric circular patches in vibration energy harvesting. These kinds of patches namely PZT buzzers are inexpensive (less than 10 USD) elements and easily available. Two novel circular auxetic substrates are proposed to improve power extraction capacity of the conventional piezoelectric buzzers. Negative Poison’s ratio of the proposed meta-structure helps in efficiency enhancement. The concept is introduced, analyzed and verified through the finite element modeling and experimental testing. The idea is proved to work by comparing the harvested electrical power in the auxetic design against the conventional plain system. A parametric study is then carried out and effects of important electrical and geometrical parameters as well as the material property on the power extraction efficiency are assessed to arrive at optimum parameters. It is shown that by employing the auxetic design, a remarkable improvement in the harvested power is achievable. It is shown that for the two proposed auxetic designs, at the resonance frequency, we could reach to 10.2 and 13.3 magnification factor with respect to the plain energy harvester. Another important feature is that the resonant frequency in these new designs is very much lower than the conventional resonators. Results of this study can open a new path to application of inexpensive PZT buzzers in large-scale vibration energy harvesting.

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Performance Enhancement of Piezoelectric Energy Harvesters Using Multilayer and Multistep Beam Configurations

Cited by 63 publications

References 17 publications

Electric Footprint

Electric Footprint

Adaptive beam‐allocation method based on lobe efficacy

Study in circular auxetic structures for efficiency enhancement in piezoelectric vibration energy harvesting

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