Safe Distributed Control of Wireless Power Transfer Networks


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YILDIRIM K. S. , CARLI R., SCHENATO L.

IEEE INTERNET OF THINGS JOURNAL, vol.6, no.1, pp.1267-1275, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 6 Issue: 1
  • Publication Date: 2019
  • Doi Number: 10.1109/jiot.2018.2813420
  • Title of Journal : IEEE INTERNET OF THINGS JOURNAL
  • Page Numbers: pp.1267-1275

Abstract

Wireless power transfer networks (WPTNs) are composed of dedicated energy transmitters (ETs) that charge energy receivers (ERs) via radio frequency waves. A safe-charging WPTN should keep electromagnetic radiation below predetermined limits meanwhile maximizing the transmitted power. In this paper, we consider this requirement as an optimization problem: the maximization of harvested power by ERs subject to the electro-magnetic safety constraints. In order to provide an approximated solution to this problem, we introduce a dual ascent-like distributed charging algorithm that enables ETs to work without global information and satisfy safety constraints asymptotically. We provide an in-depth theoretical analysis of our algorithm which is supported by numerical simulations.