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Proceedings Article

An equivalent circuit model of supercapacitors for applications in wireless sensor networks

[+] Author Affiliations
Hengzhao Yang, Ying Zhang

Georgia Institute of Technology (USA)

Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 79810D (April 13, 2011); doi:10.1117/12.880313
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From Conference Volume 7981

  • Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011
  • Masayoshi Tomizuka
  • San Diego, California, USA | March 06, 2011

abstract

Energy harvesting technologies have been extensively researched to develop long-lived wireless sensor networks. To better utilize the harvested energy, various energy storage systems are proposed. A simple circuit model is developed to describe supercapacitor behavior, which uses two resistor-capacitor branches with different time constants to characterize the charging and redistribution processes, and a variable leakage resistance (VLR) to characterize the self-discharge process. The voltage and temperature dependence of the VLR values is also discussed. Results show that the VLR model is more accurate than the energy recursive equation (ERE) models for short term wireless sensor network applications.

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Citation

Hengzhao Yang and Ying Zhang
"An equivalent circuit model of supercapacitors for applications in wireless sensor networks", Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 79810D (April 13, 2011); doi:10.1117/12.880313; http://dx.doi.org/10.1117/12.880313


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