Coupled electromechanical analysis of MEMS-based energy harvesters integrated with nonlinear power extraction circuits

Pasharavesh, Abdolreza; Ahmadian, M.T.; Zohoor, Hassan

doi:10.1007/s00542-016-3024-y

Cited by 13 publications

(8 citation statements)

References 51 publications

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“…Researchers have found that active synchronized switch harvesting on inductor circuits (Guyomar et al, 2005; Liang and Liao, 2012; Shu et al, 2007) and synchronized electric charge extraction circuits (Badel and Lefeuvre, 2016; Lefeuvre et al, 2005; Wu et al, 2012) enable promising DC power delivery for linear vibration energy harvesters under harmonic excitations. Comparatively, the simple and passive standard diode bridge rectifier provides an effective DC power delivery from linear and nonlinear vibration energy harvesters (Elvin, 2014; Pasharavesh et al, 2017; Shu and Lien, 2006b; Sodano et al, 2005) without unfavorable loss of power resulting from active synchronization. For instance, Shu and Lien (2006b) have shown that the electromechanical coupling coefficient is strongly influential on the mechanical-to-electrical energy conversion efficiency of linear energy harvesters interfaced with diode bridge rectifiers, which emphasizes the importance of comprehensively investigating the roles of practical rectifying circuits in contrast to AC resistive circuit counterparts.…”

Section: Introductionmentioning

confidence: 99%

Investigation of direct current power delivery from nonlinear vibration energy harvesters under combined harmonic and stochastic excitations

Dai

Harne

2017

Journal of Intelligent Material Systems and Structures

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Leveraging smooth nonlinearities in vibration energy harvesters has been shown to improve the potential for kinetic energy capture from the environment as a transduced, alternating flow of electrical current. While researchers have closely examined the direct current power delivery performance of linear energy harvesters, there is a clear need to quantify the direct current power provided by nonlinear harvester platforms, in particular those platforms having bistable nonlinearities that are shown to have advantages over other smooth nonlinearities. In addition, because real world excitations are neither purely harmonic nor purely stochastic, the influences of an arbitrary combination of such excitation mechanisms on power delivery must be uncovered. To bring needed light to these roles and opportunities for nonlinear energy harvesters to provide direct current electrical power for numerous applications, this research formulates a new analytical approach to characterize simultaneous harmonic and stochastic mechanical and electrical responses of nonlinear harvester platforms subjected to realistic base excitation. Based on the outcomes of analytical, numerical, and experimental studies, it is found that additive stochastic excitation may result in direct current power enhancement via perturbation from a low amplitude state particularly at low frequencies or reduce the direct current power by preventing persistent snap-through response often at higher frequencies. When the noise standard deviation is greater than the harmonic amplitude by approximately two times, the advantages to direct current power generation are more often realized.

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Section: Introductionmentioning

confidence: 99%

Investigation of direct current power delivery from nonlinear vibration energy harvesters under combined harmonic and stochastic excitations

Dai

Harne

2017

Journal of Intelligent Material Systems and Structures

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“…It should be noted that the above solution is valid while N < ε −2 Ω ω . In the summation of Equation (31), harmonics with similar frequencies may occur as ε 2 nω goes beyond Ω and Equation (34), which sums the power of all harmonics assuming they have different frequencies, will not be accurate anymore. Fortunately, since a good convergence will be obtained by values of N far below this limit, Equation (34) is applicable with a very good accuracy.…”

Section: Of 19mentioning

confidence: 99%

“…The nonlinear behavior of piezoelectric harvesters may arise from geometrical nonlinearities, the nonlinear response of the piezoelectric ceramics, or coupling with nonlinear energy harvesting circuits. It has been shown that the behavior of a harvester under the effect of any type of these nonlinearities may be modeled using a Duffing-type governing equation [32][33][34]. It should be noted that a Duffing oscillator used as an energy scavenger suffers from a major drawback due to the coexistence of lowand high-energy stable equilibria, making its wideband operation dependent on the trajectory of the excitation [21].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of an Electromagnetically Coupled Piezoelectric Energy Scavenger

2020

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The deliberate introduction of nonlinearities is widely used as an effective technique for the bandwidth broadening of conventional linear energy harvesting devices. This approach not only results in a more uniform behavior of the output power within a wider frequency band through bending the resonance response, but also contributes to energy harvesting from low-frequency excitations by activation of superharmonic resonances. This article investigates the nonlinear dynamics of a monostable piezoelectric harvester under a self-powered electromagnetic actuation. To this end, the governing nonlinear partial differential equations of the proposed harvester are order-reduced and solved by means of the perturbation method of multiple scales. The results indicate that, according to the excitation amplitude and load resistance, different responses can be distinguished at the primary resonance. The system behavior may involve the traditional bending of response curves, Hopf bifurcations, and instability regions. Furthermore, an order-two superharmonic resonance is observed, which is activated at lower excitations in comparison to order-three conventional resonances of the Duffing-type resonator. This secondary resonance makes it possible to extract considerable amounts of power at fractions of natural frequency, which is very beneficial in micro-electro-mechanical systems (MEMS)-based harvesters with generally high resonance frequencies. The extracted power in both primary and superharmonic resonances are analytically calculated, then verified by a numerical solution where a good agreement is observed between the results.

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Section: Introductionmentioning

confidence: 99%

“…18 While in the above-mentioned researches the harvesting circuit is generally modeled as a single linear impedance in the coupled electromechanical analysis of the system, there are some other investigations which have focused on the accurate modeling of the alternating current (AC)-direct current (DC) converters with generally assuming simpler models for the mechanical part. [19][20][21] Surveying the existing literature on fabrication of MEMS piezoelectric generators reveals that according to high natural frequencies of micro-scale resonators most of the fabricated devices compromise large attached tip masses with dimensions comparable with or even larger than the beam length. [22][23][24][25][26] This necessitates taking into account the effect of the tip mass offset together with its rotary inertia in their modeling.…”

Section: Introductionmentioning

confidence: 99%

Complex modal analysis and coupled electromechanical simulation of energy harvesting piezoelectric laminated beams

Pasharavesh

Ahmadian

Zohoor

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this paper, coupled electromechanical behavior of a vibrational energy harvesting system composed of a unimorph piezoelectric laminated beam with a large attached tip mass is investigated. To achieve this goal, first the electromechanically coupled partial differential equations governing the lateral displacement and output voltage of the harvester are extracted through exploiting the Hamilton’s principle. Considering vibration damping due to mechanical to electrical energy conversion, a complex modal analysis is performed to extract the complex eigenfrequencies and eigenfunctions of the system. Furthermore, an exact analytical solution is presented for the system response to the harmonic base excitations, including output voltage and harvested power. To validate the analytical results, at the next step a finite element simulation is conducted through ABAQUS software. To perform a fully-coupled analysis which brings into account the effect of harvesting circuit, user subroutine User-defined Amplitude (UAMP) is utilized to calculate the voltage–current relation and impose the correct electrical charge on the electrodes in each step by monitoring the output voltage of the system at previous time increments. Results of both analytical and numerical simulations are compared for a Micro-Electro-Mechanical Systems (MEMS) harvester as a case study, where a very good agreement is observed between them.

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Coupled electromechanical analysis of MEMS-based energy harvesters integrated with nonlinear power extraction circuits

Cited by 13 publications

References 51 publications

Investigation of direct current power delivery from nonlinear vibration energy harvesters under combined harmonic and stochastic excitations

Investigation of direct current power delivery from nonlinear vibration energy harvesters under combined harmonic and stochastic excitations

Performance Analysis of an Electromagnetically Coupled Piezoelectric Energy Scavenger

Complex modal analysis and coupled electromechanical simulation of energy harvesting piezoelectric laminated beams

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