Array of piezoelectric energy harvesters

Lien, I. C.; Shu, Y. C.

doi:10.1117/12.880260

Cited by 13 publications

(15 citation statements)

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“…Liao [18], Guyomar et al [10] Liang and Liao [18], Guyomar et al [10] Liang and Liao [18], Guyomar et al [10] 2009 [19,20], Chen et al [6] Wang and Inman [44], Lien and Shu [21][22][23], Liang and Liao [19,20], Wu et al [50] power with the standard interface circuits, while issues in energy harvesting efficiency and dimensionless analyses have only been addressed in limited works. In these aforementioned works, none have simultaneously normalized and optimized both 'harvested resonant power' and 'energy harvesting efficiency'.…”

Section: Liang Andmentioning

confidence: 99%

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Dimensionless optimization of piezoelectric vibration energy harvesters with different interface circuits

Wang

Liu

2013

Smart Mater. Struct.

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Conversion of mechanical vibration energy into electric energy could provide reliable and efficient energy utilization. Both the harvested resonant power and the energy efficiency have been studied based on a single degree of freedom weak electromechanical coupling piezoelectric vibration energy harvester and normalized in a dimensionless form. Performance optimizations have been conducted for the energy harvester connected with different interface circuits in terms of normalized harvested resonant power and resonant energy harvesting efficiency to identify both qualitatively and quantitatively the best energy extraction and storage interface circuit. Both the dimensionless harvested resonant power and the resonant energy harvesting efficiency formulae have been normalized to contain only two normalized variables of resistance and force factor regardless of the size and excitation magnitude of the energy harvesters.

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Section: Liang Andmentioning

confidence: 99%

“…Graphically, a local ridge peak of the dimensionless harvested resonant power is observed in figure 3 under specific values of α N or R N . However, there is not a single set of α N and R N which simultaneously satisfies both equations (20) and (21).…”

Section: Sdof Piezoelectric Vibration Energy Harvesters Connected To mentioning

confidence: 99%

Dimensionless optimization of piezoelectric vibration energy harvesters with different interface circuits

Wang

Liu

2013

Smart Mater. Struct.

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“…They have proposed two approaches to study this problem. One is based on the direct integration of the system equations [29] and the other utilizes the idea of equivalent load impedance [30]. Several analytic estimates on harvested power have been proposed for the Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Analysis of an array of piezoelectric energy harvesters connected in series

Lin

Lien

et al. 2013

Smart Mater. Struct.

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This paper investigates the electrical response of a series connection of piezoelectric energy harvesters (PEHs) attached to various interface electronics, including standard and parallel-/series-SSHI (synchronized switch harvesting on inductor) circuits. In contrast to the case of parallel connection of multiple oscillators, the system response is determined by the matrix formulation of charging on a capacitance. In addition, the adoption of an equivalent impedance approach shows that the capacitance matrix can be explicitly expressed in terms of the relevant load impedance. A model problem is proposed for performance evaluation of harvested power under different choices of interface circuits. The result demonstrates that the parallel-SSHI array system exhibits higher power output with moderate bandwidth improvement, while the series-SSHI system delivers a pronounced wideband at the cost of peak harvested power. The standard array system shows a mild ability in power harvesting between these two SSHI systems. Finally, comparisons between the series and parallel connection of oscillators are made, showing the striking contrast of these two cases.

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“…They are based on one of these principles: reducing the power loss in rectifying diodes [12], improving the extracted power by using an adaptive circuit [13,14], adaptive control of the rectified DC voltage [15], or adjusting the natural frequency of piezoelectric energy harvesters [16]. At present, there are three predominant energy harvesting circuits: the passive diode-rectifier circuit [17], the semiactive circuit [18][19][20], and the active circuit [21]. The passive diode-rectifier circuit is the simplest technology, and its efficiency is the lowest.…”

Section: Related Workmentioning

confidence: 99%

An Energy Supply System for Wireless Sensor Network Nodes

Zheng

Zhang

2012

International Journal of Distributed Sensor Networks

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The power source is a critical obstacle for wireless sensor network nodes. In order to prolong the lifetime of wireless sensor networks, this paper presents an energy supply system that uses a specially designed broadband piezoelectric energy harvesting technology for sustaining the operation of wireless sensor network nodes. The proposed energy supply circuit can apply an optimal control voltage to the piezoelectric element to ensure impedance matching between the vibration source and the energy supply system in nonresonance frequencies. As compared to the conventional piezoelectric energy harvesting circuit, it is shown that the efficiency has been increased 4 times. In this work, the overall system structure, the function modules design, and the performance testing analysis are illuminated in detail. Experimental results reveal that this energy supply system can significantly improve power within the wide bands by the active piezoelectric energy harvesting technology and enable wireless sensor network nodes to operate normally.

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Array of piezoelectric energy harvesters

Cited by 13 publications

References 0 publications

Dimensionless optimization of piezoelectric vibration energy harvesters with different interface circuits

Dimensionless optimization of piezoelectric vibration energy harvesters with different interface circuits

Analysis of an array of piezoelectric energy harvesters connected in series

An Energy Supply System for Wireless Sensor Network Nodes

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