Resistive Load Influence on the Power and Bandwidth of Bistable Energy Harvesters

Demouron, Quentin; Morel, Adrien; Gibus, David; Benhemou, Aya; Badel, Adrien

doi:10.1109/rtsi55261.2022.9905162

Cited by 2 publications

(4 citation statements)

References 15 publications

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“…The harmonic balance method already presented in [16] for a bistable PEH connected to a resistive load, is applied to (2). Note that only the first harmonic of the displacement is considered since its waveform is assumed to be close to a sine wave.…”

Section: Bistable Peh Dynamicsmentioning

confidence: 99%

“…Moreover, the mechanical displacement of the inertial mass on inter-well motion (high-energy orbit) is imposed, as demonstrated by Morel et al in 2022 [13] which makes the P-SSHI especially suitable to increase the performance of bistable PEH. However, to date and to the authors knowledge, most of the papers focused on the study of mutual influence of nonlinear PEH and load resistance [14][15][16]. Only a few papers focus on the joint study and modeling of nonlinear EEC with nonlinear PEH.…”

Section: Introductionmentioning

confidence: 99%

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A comparative analysis of parallel SSHI and SEH for bistable vibration energy harvesters

Demouron,

Morel,

Gibus

et al. 2023

Smart Mater. Struct.

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The present work focuses on ambient vibration energy harvesting. Specifically, this article deals with bistable piezoelectric energy harvesters which exhibits a wider bandwidth than linear oscillators. These complex systems require an energy extraction circuit to rectify their voltage to supply power to autonomous sensors. This energy extraction circuit needs to be optimized in order to increase the harvested power and even the bandwidth of piezoelectric energy harvesters. Because of the complex dynamics of bistable piezoelectric energy harvesters, there is a lack of simple and physically-insightful models in the literature that would allow the understanding and optimization of the extraction circuit. To address this issue, the present work derives closed-form models of a bistable piezoelectric energy harvester coupled to a passive and an active synchronous energy extraction circuit: respectively the standard energy harvesting circuit (SEH) and the parallel synchronized switch harvesting on inductor circuit (P-SSHI). Experimental measurements conducted on a custom bistable piezoelectric energy harvester demonstrate the validity of the proposed models with a relative error lower than 15% on the harvested power and the bandwidth. The proposed models allow to easily understand the influence of the P-SSHI circuit on the dynamics of a bistable piezoelectric energy harvester. Moreover, a comparison of the performance of the SEH and the P-SSHI circuits, valid for any bistable generator, is proposed. The latter shows that under low electromechanical coupling and low acceleration amplitude the P-SSHI circuit leads to multiply the maximum harvested power up to 4.3 compared to the SEH circuit, and the bandwidth by a factor of 2.3.

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Section: Bistable Peh Dynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A comparative analysis of parallel SSHI and SEH for bistable vibration energy harvesters

Demouron,

Morel,

Gibus

et al. 2023

Smart Mater. Struct.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The harmonic balance method is applied to (6) as detailed in [8] and [12], and leads to the equation of the mass displacement amplitude 𝑥 𝑚 , the critical angular frequency 𝜔 𝑐 1 and the extracted power 𝑃 𝑒𝑥𝑡 .…”

Section: Analytical Modellingmentioning

confidence: 99%

“…Figure 1: State-of-the-art[6][7][8] and aim of the present paper: studying the impact of non-linear circuitry on nonlinear PEH.…”

mentioning

confidence: 99%

Performance Enhancement of Bistable Piezoelectric Energy Harvesters Using Non-Linear Energy Extraction Circuit

Demouron

Morel

Gibus

et al. 2022

2022 21st International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerME

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Piezoelectric energy harvesters (PEH) require an electronic circuit to rectify their AC voltage in order to supply wireless sensors. In the literature, it has been shown that such electronic circuit can be tuned and optimized in order to enhance the bandwidth and power of linear PEH. However, to date, few works have explored the electrical optimization of non-linear bistable PEH. The present work reports the optimization of the harvested power and bandwidth of bistable PEH by mean of a non-linear energy extraction circuit: the parallel synchronized switch harvesting on inductor (P-SSHI). A simple model of the bistable PEH connected to the P-SSHI circuit has been derived and the closed-form expression of the harvested power has been obtained. The experimental tests, conducted on a custom-made bistable PEH showed that the results are in good agreement with the model, proving its validity. Based on the model, it is shown that the P-SSHI circuit allows to increase the bandwidth (1.6 times) and the harvested power (up to 7.5 times) compared to the standard energy harvesting (SEH) circuit.

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Resistive Load Influence on the Power and Bandwidth of Bistable Energy Harvesters

Cited by 2 publications

References 15 publications

A comparative analysis of parallel SSHI and SEH for bistable vibration energy harvesters

A comparative analysis of parallel SSHI and SEH for bistable vibration energy harvesters

Performance Enhancement of Bistable Piezoelectric Energy Harvesters Using Non-Linear Energy Extraction Circuit

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