Power loss consideration in wireless piezoelectric acoustic-electric power feedthru

Chang, Zenghu; Bao, Xiaoqi; Doty, Benjamin J.; Sherrit, Stewart; Bar‐Cohen, Yoseph; Bădescu, Mircea; Aldrich, Jack

doi:10.1117/12.716433

Cited by 16 publications

(15 citation statements)

References 3 publications

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“…After receiving the vibrations from the outer shell, the inner transducer is able to convert the mechanical energy into electric one again through the converse piezoelectric effect. Sherrit et al [8,9] and Bao et al [1,10] investigated the energy loss of this transmission method by experiments and finite element computations, and demonstrated experimentally 110W power through the wall at 88% efficiency. Saulnier et al [11] and Primerano et al [12] have studied wireless communication through a steel wall by using ultrasound piezoelectric transducers, where conventional radio-frequency communications cannot be applied due to shielding of the steel.…”

Section: Introductionmentioning

confidence: 98%

Wireless energy transmission through a sealed wall using the acoustic-electric interaction of piezoelectric ceramics

Xue

et al. 2009

SPIE Proceedings

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We propose a system to transmit and store electric energy by using transmitting element, a chargeable battery, and a rectifier together with a dc-dc converter to connect the two components as an integrated system. The transmitting element is modeled by two piezoelectric transducers. One is as the driving transducer for generating acoustic wave; the other is as the receiving transducer for converting the acoustic energy into electric energy. A dc-dc converter employed in the storage circuit is to match the optimal output voltage of the receiving transducer with the battery voltage for efficient charging. A synchronized switch harvesting on inductor (SSHI) in parallel with the receiving transducer is introduced to artificially extend the closed circuit interval of the rectifier. This analysis extends a previous one by considering that influence of wall thickness which always exists in the application. The characteristics of the energy-transmitting element are studied. Performance of the energy-transmitting element is optimized by synthetic adjusting parameters of the element, and carefully choosing input frequency of electric source.

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Section: Introductionmentioning

confidence: 98%

Wireless energy transmission through a sealed wall using the acoustic-electric interaction of piezoelectric ceramics

Xue

et al. 2009

SPIE Proceedings

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“…after receiving the vibrations, the inner transducer converts the mechanical energy into electric energy again via the converse piezoelectric effect. sherrit et al [8], [9] and bao et al [1], [10] investigated the energy loss of this transmission system by experiments and finite element computations. saulnier et al [11] and Primerano et al [12] have used ultrasound piezoelectric transducers to study wireless communication through a solid steel wall, where the conventional radio frequency communications cannot be applied due to the shielding of the steel.…”

Section: Introductionmentioning

confidence: 99%

A system of two piezoelectric transducers and a storage circuit for wireless energy transmission through a thin metal wall

Chen

et al. 2008

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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A system to wirelessly convey electric energy through a thin metal wall is proposed in the paper, where 2 piezoelectric transducers are used to realize energy transformation between electric and mechanical, and a rechargeable battery is employed to store the transmitted energy. To integrate them as a whole, an interface of a modulating circuit is applied between the transducer system and the storage battery. In addition, a synchronized switch harvesting on inductor in parallel with the transducer system is introduced to artificially extend the closed interval of the modulating circuit. The process of transmitting energy is computed, and the performance of the transducer system is optimized in detail for a prescribed external electric source. The results obtained are useful for understanding and designing wireless energy supply systems.

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“…For instance, to ensure the reliability and performance of nuclear stockpiles, there have been proposals that piezoelectric transducers are used to generate acoustic waves propagating through a sealed armor for transmitting a small amount of power to the electronic devices inside the sealed armor. In a few recent papers [1][2][3][4][5][6], the possibility of transmitting a certain amount of energy through a metal armor was explored by theoretical and experimental studies. There are also other possible applications of the technology like data transmission [6] through a wall by acoustic waves.…”

Section: Introductionmentioning

confidence: 99%

Power transmission through an unbounded elastic plate using a finite piezoelectric actuator and a finite piezoelectric power harvester

Geng

Zhang

et al. 2009

JAE

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Power transmission through an unbounded elastic plate using a finite piezoelectric actuator and a finite piezoelectric power harvester Abstract. Recently thickness vibrations of an unbounded elastic plate with an unbounded piezoelectric actuator and an unbounded piezoelectric power harvester have been studied for power transmission through an elastic wall with various potential applications. In this paper we analyze the more realistic geometric configuration of a structure with finite piezoelectric transducers on unbounded plates operating with slowly varying thickness modes via the first-order lamination theory for plates. In addition to the output voltage and transmitted power, confinement and localization of the vibration energy is also studied which is of practical importance and can only be understood from analyzing vibrations of finite transducers.

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Power loss consideration in wireless piezoelectric acoustic-electric power feedthru

Cited by 16 publications

References 3 publications

Wireless energy transmission through a sealed wall using the acoustic-electric interaction of piezoelectric ceramics

Wireless energy transmission through a sealed wall using the acoustic-electric interaction of piezoelectric ceramics

A system of two piezoelectric transducers and a storage circuit for wireless energy transmission through a thin metal wall

Power transmission through an unbounded elastic plate using a finite piezoelectric actuator and a finite piezoelectric power harvester

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