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Proceedings Paper

Wireless energy transmission through a sealed wall using the acoustic-electric interaction of piezoelectric ceramics
Author(s): Hongping Hu; Huan Xue; Yuantai Hu; Xuedong Chen
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Paper Abstract

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.

Paper Details

Date Published: 21 October 2009
PDF: 9 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74936N (21 October 2009); doi: 10.1117/12.840098
Show Author Affiliations
Hongping Hu, Huazhong Univ. of Science and Technology (China)
Huan Xue, Huazhong Univ. of Science and Technology (China)
Yuantai Hu, Huazhong Univ. of Science and Technology (China)
Xuedong Chen, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering

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