Characterizing harmonic and subharmonic solutions of the bi-stable piezoelectric harvester with a modified Harmonic Balance approach

Giri, Abhijeet Madhukar; Ali, Shaikh Faruque; Arockiarajan, A.

doi:10.1016/j.ymssp.2023.110437

Cited by 8 publications

(3 citation statements)

References 46 publications

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“…Many devices have been developed by researchers based on the abovementioned energy sources. In this research work, we focused on energy conditions also reduces because a nonlinear system may exhibit multiple low-and high-amplitude solutions [25][26][27]. However, as the nonlinear systems exhibit better performance at non-resonant conditions, overall harvesting efficiency is improved due to the broadband response.…”

Section: Introductionmentioning

confidence: 99%

“…Compared to a linear system, the broadband frequency effect causes a reduction in the mechanical quality factor (Q-factor). The highest power output obtained under resonant conditions also reduces because a nonlinear system may exhibit multiple low-and high-amplitude solutions [25][26][27]. However, as the nonlinear systems exhibit better performance at non-resonant conditions, overall harvesting efficiency is improved due to the broadband response.…”

Section: Introductionmentioning

confidence: 99%

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Energy Harvester Based on a Rotational Pendulum Supported with FEM

Litak,

Kondratiuk,

Wolszczak

et al. 2024

Applied Sciences

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The proposed energy harvesting system is based on a rotational pendulum-like electromagnetic device. Pendulum energy harvesting systems can be used to generate power for wearable devices such as smart watches and fitness trackers, by harnessing the energy from the human body motion. These systems can also be used to power low-energy-consuming sensors and monitoring devices in industrial settings where consistent ambient vibrations are present, enabling continuous operation without any need for frequent battery replacements. The pendulum-based energy harvester presented in this work was equipped with additional adjustable permanent magnets placed inside the induction coils, governing the movement of the pendulum. This research pioneers a novel electromagnetic energy harvester design that offers customizable potential configurations. Such a design was realized using the 3D printing method for enhanced precision, and analyzed using the finite element method (FEM). The reduced dynamic model was derived for a real-size device and FEM-based simulations were carried out to estimate the distribution and interaction of the magnetic field. Dynamic simulations were performed for the selected magnet configurations of the system. Power output analyses are presented for systems with and without the additional magnets inside the coils. The primary outcome of this research demonstrates the importance of optimization of geometric configuration. Such an optimization was exercised here by strategically choosing the size and positioning of the magnets, which significantly enhanced energy harvesting performance by facilitating easier passage of the pendulum through magnetic barriers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy Harvester Based on a Rotational Pendulum Supported with FEM

Litak,

Kondratiuk,

Wolszczak

et al. 2024

Applied Sciences

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“…The introduction of nonlinear properties into piezoelectric harvesters by magnetic, 12 electrostatic, 13 and mechanical contact interactions 14 has been investigated to improve their frequency response bandwidth. Nonlinearities inherent to the material, such as geometric nonlinearity 15,16 and nonlinear piezoelectric behavior, 17,18 were also studied by researchers.…”

mentioning

confidence: 99%

Dynamics of a piezoelectric vibration energy harvester with a pseudoelastic SMA spring

Adeodato,

Giri,

Wolszczak

et al. 2024

AIP Advances

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The development of small-scale and low power consumption devices has been motivating the design of intelligent mechanisms, exhibiting a wide power density spectrum across various external sources. Smart materials come up as an attractive alternative due to their intrinsic multi-coupling between different physical domains. In this context, piezoelectric materials allow conversion of mechanical energy of movement into electrical power through the direct piezoelectric effect. This work investigates a piezoelectric energy harvester combined with a shape memory alloy (SMA) spring to explore the combination of both the smart materials for energy harvesting. The pseudoelastic hysteretic effect of SMA is explored in order to passively change the internal system properties such as stiffness and damping during the harvesting process. Numerical analyses are performed considering the normalized power converted by the harvester, focusing on the influence of the SMA martensite phase transformation under different scenarios. The results exhibit an increment in the harvester bandwidth when compared with a traditional linear piezoelectric energy harvester.

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