Analysis and Modelling towards Hybrid Piezo-Electromagnetic Vibrating Energy Harvesting Devices

Reuschel, Torsten; Salehian, Armaghan

doi:10.1063/1.3663465

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…Similarly, when PE loads are constant, mean output powers of nonlinear and linear hybrid energy harvesters with EM loads are shown in figures 16 and 17. Figures [14][15][16][17] demonstrate that the mean output powers of nonlinear and linear hybrid energy harvesters with PE loads or EM loads increase remarkably as the SD of acceleration increases. For hybrid energy harvesters with significant capacitances under random excitation, nonlinear one always outperforms the linear one.…”

Section: Effects Of Excitation's Sd On Output Characteristics Bymentioning

confidence: 99%

“…Nowadays, extensive researches and developments have been carried out in this area [7,8]. Current researches are mainly focused on the structure design and performance validation [9][10][11][12][13][14][15][16][17]. However, only a few researchers investigated the effects of introducing nonlinearities into hybrid PE and EM energy harvesters.…”

Section: Introductionmentioning

confidence: 99%

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Effects of introducing nonlinear components for a random excited hybrid energy harvester

Zhou¹,

Gao²,

Liu³

et al. 2016

Smart Mater. Struct.

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This work is mainly devoted to discussing the effects of introducing nonlinear components for a hybrid energy harvester under random excitation. For two different types of nonlinear hybrid energy harvesters subjected to random excitation, the analytical solutions of the mean output power, voltage and current are derived from Fokker–Planck (FP) equations. Monte Carlo simulation exhibits qualitative agreement with FP theory, showing that load values and excitation’s spectral density have an effect on the total mean output power, piezoelectric (PE) power and electromagnetic power. Nonlinear components affect output characteristics only when the PE capacitance of the hybrid energy harvester is non-negligible. Besides, it is also demonstrated that for this type of nonlinear hybrid energy harvesters under random excitation, introducing nonlinear components can improve output performances effectively.

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Section: Effects Of Excitation's Sd On Output Characteristics Bymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of introducing nonlinear components for a random excited hybrid energy harvester

Zhou¹,

Gao²,

Liu³

et al. 2016

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…On the other hand, the electromagnetic energy harvest can output hundreds or thousands of microamperes, but its voltage is too small to meet the needs of the devices. Therefore, the disadvantages for the two kinds of energy harvesters seriously limit the application ranges, and researchers have proposed that a hybrid energy harvester that combines piezoelectric and electromagnetic harvesting mechanisms can solve these problems simultaneously, and can benefit from the advantages of the two techniques [23,24].…”

Section: Introductionmentioning

confidence: 99%

An analysis of the coupling effect for a hybrid piezoelectric and electromagnetic energy harvester

Gao

Niu

et al. 2014

Smart Mater. Struct.

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This paper investigates the influence of the electromechanical coupling effect on the performances of a hybrid piezoelectric and electromagnetic energy harvester. For a common hybrid energy harvester, we derive an accurate analytical solution and get expressions for the resonant frequency shift, output power, amplitude and conversion efficiency. Then, based on various degrees of coupling effect, the performance of the harvester is studied with different load and excitation frequency, and compared with piezoelectric-only and electromagnetic-only energy harvesters. The results show that the bigger the coupling coefficient, the greater the resonant frequency shift, output power and conversion efficiency. In the weak coupling and medium coupling, the performances of the hybrid energy harvester are better than those of the two separate energy harvesting techniques; however, the hybrid energy harvester does not increase the power and conversion efficiency in contrast with the piezoelectric-only and electromagnetic-only energy harvester in strong coupling. In addition, the optimal load resistance of the hybrid energy harvester is related to the strength of the coupling effect; moreover, the optimal load resistance of the electromagnetic harvesting element for the hybrid harvester is bigger than that of the electromagnetic-only harvester in the medium and strong coupling. Through analysis of the results, ways of boosting the performances of the hybrid energy harvester are found.

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Hybrid Energy Harvesters (HEHs)—A Review

Gure

Kar

Taçgın

et al. 2017

Energy Harvesting and Energy Efficiency

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Analysis and Modelling towards Hybrid Piezo-Electromagnetic Vibrating Energy Harvesting Devices

Cited by 6 publications

References 2 publications

Effects of introducing nonlinear components for a random excited hybrid energy harvester

Effects of introducing nonlinear components for a random excited hybrid energy harvester

An analysis of the coupling effect for a hybrid piezoelectric and electromagnetic energy harvester

Hybrid Energy Harvesters (HEHs)—A Review

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