Equivalent Impedance Electroelastic Modeling of Multiple Piezo-Patch Energy Harvesters on a Thin Plate With AC–DC Conversion

Aghakhani, Amirreza; Basdogan, Ipek

doi:10.1109/tmech.2017.2712713

Cited by 33 publications

(26 citation statements)

References 32 publications

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“…On the other hand, the electrical interface circuit plays a crucial role in energy harvesting power regulation and enhancement. 22,[35][36][37][38] However, the theoretical and numerical models in the previous studies are difficult to be extended to incorporate the complex coupling between the nonlinear aerodynamic force, piezoelectric and mechanical structure, and the nonlinear power extraction circuit. Recently, researchers have utilized the equivalent circuit model (ECM) to connect the structural modeling and electrical simulation based on the similar characteristics as the Van-der Pol model in an electric circuit.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, the electrical interface circuit plays a crucial role in energy harvesting power regulation and enhancement . However, the theoretical and numerical models in the previous studies are difficult to be extended to incorporate the complex coupling between the nonlinear aerodynamic force, piezoelectric and mechanical structure, and the nonlinear power extraction circuit.…”

Section: Introductionmentioning

confidence: 99%

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Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

et al. 2020

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Summary Small‐scale wind energy harvesting from vortex‐induced vibrations (VIV) has been introduced in recent years as a renewable power source for microelectronics and wireless sensors. Previous studies have focused on modeling and optimizing the VIV‐based piezoelectric energy harvester (VIVPEH) structures and simplified the complicated interface circuits as pure resistors with an alternating current (AC) output. In practice, an AC output is required to be transformed into a direct current (DC) followed by further regulations before being used for real applications. Incorporating the rectification and regulation, traditional theoretical and numerical models will become extremely cumbersome and even impossible. To address this issue, this work proposes an equivalent circuit model (ECM) for a typical VIVPEH. The Scanlan‐Ehsan aerodynamic force model is employed to describe the fluid‐structure interaction. Wind tunnel experiments are carried out to validate the derived model. The performances of the VIVPEH with AC and DC interface circuits are subsequently analyzed and compared to understand the influences of these circuits on the operational wind speed bandwidth, power output, vibration amplitude, and electrical damping.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

et al. 2020

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“…The diving-surfacing system is composed of a buoyancy cabin (3), water container (9), pushing device (10), fixed plate (11), and magnetic valve (8). The control and storage system is made up of an upper cover (25), battery cover (15), body structure (13), battery (21), energy storage (14), and controller (22). The propelling system includes a propeller (20) and a propulsion motor (16).…”

Section: Operating Principle Of the Uuvmentioning

confidence: 99%

“…Experimental validation of the single-mode coupled voltage output and vibration response expressions is presented for a bimorph cantilever with a tip mass. Aghakhani et al [15] proposed an analytical approach to derive the closed-form mechanical and electrical response expressions of multiple piezo-patch energy harvesters. Gozum et al [16] developed a methodology for vibration analysis of laminated composite plates with surface-bonded piezo-patches.…”

Section: Introductionmentioning

confidence: 99%

Frequency Sensitivity and Mode Characteristics of Body Structure for a Piezoelectric-Based UUV

2018

Applied Sciences

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The authors propose a novel unmanned underwater vehicle (UUV) based on a piezoelectric smart element, which facilitates piezoelectric energy harvesting as well as piezoelectric vibration reduction. In this report, the operating principle of the UUV is presented. Using Donnell’s theory, dynamic models of body structure are established, and the natural frequency sensitivity in addition to the vibration mode equations are deduced. Using MATLAB software, the vibration modes and their sensitivity to the change of investigated parameters are simulated. The results indicate that the natural frequencies are sensitive to the change of the middle surface radius and body length. It was also noted that the shear modes are more apparent for lower order vibrations, while the torsional moment modes are more significant for higher order vibrations. These results can be used both to optimize the dimensions of a UUV and to reduce its vibrations during operation.

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“…More recently, Aghakhani et. al 24,25 have presented both equivalent circuit modeling and analytical distributed-parameter expressions for DC electrical output of the multiple piezo-patch harvesters attached to a thin plate.…”

Section: Introductionmentioning

confidence: 99%

Multiple piezo-patch energy harvesters on a thin plate with respective AC-DC conversion

Aghakhani

Basdogan

2018

Active and Passive Smart Structures and Integrated Systems XII

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Piezoelectric patch energy harvesters can be directly integrated to plate-like structures which are widely used in automotive, marine and aerospace applications, to convert vibrational energy to electrical energy. This paper presents two different AC-DC conversion techniques for multiple patch harvesters, namely single rectifier and respective rectifiers. The first case considers all the piezo-patches are connected in parallel to a single rectifier, whereas in the second case, each harvester is respectively rectified and then connected in parallel to a smoothing capacitor and a resistive load. The latter configuration of AC-DC conversion helps to avoid the electrical charge cancellation which is a problem with the multiple harvesters attached to different locations of the host plate surface. Equivalent circuit model of the multiple piezo-patch harvesters is developed in the SPICE software to simulate the electrical response. The system parameters are obtained from the modal analysis solution of the plate. Simulations of the voltage frequency response functions (FRFs) for the standard AC input-AC output case are conducted and validated by experimental data. Finally, for the AC input-DC output case, numerical simulation and experimental results of the power outputs of multiple piezo-patch harvesters with multiple AC-DC converters are obtained for a wide range of resistive loads and compared with the same array of harvesters connected to a single AC-DC converter.

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Equivalent Impedance Electroelastic Modeling of Multiple Piezo-Patch Energy Harvesters on a Thin Plate With AC–DC Conversion

Cited by 33 publications

References 32 publications

Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

Frequency Sensitivity and Mode Characteristics of Body Structure for a Piezoelectric-Based UUV

Multiple piezo-patch energy harvesters on a thin plate with respective AC-DC conversion

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