Contactless energy transfer through air by means of ultrasound

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34 Citations (Scopus)


An alternative approach to the wireless transfer of energy is proposed, employing acoustic waves in air. Unlike conventional methods, acoustic energy transfer is able to achieve energy transfer at high efficiencies over distances that are large in comparison to the dimensions of the transmitter and the receiver. This paper gives an overview of the principle and explains the different loss mechanisms that come into play. A theoretically limit on the achievable efficiency is calculated. It exceeds that of a comparable inductively coupled system by an order of magnitude. First preliminary measurements indicate that AET is feasible, although the measured efficiency is lower than the predicted theoretical limit.
Original languageEnglish
Title of host publicationProceedings of the 37th Annual Conference on IEEE Industrial Electronics Society (IECON 2011), 7-10 November 2011, Melbourne, Australia
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Print)978-1-61284-969-0
Publication statusPublished - 2011
Event37th Annual Conference of the IEEE Industrial Electronics Society (IECON 2011) - Melbourne, Australia
Duration: 7 Nov 201110 Nov 2011
Conference number: 37


Conference37th Annual Conference of the IEEE Industrial Electronics Society (IECON 2011)
Abbreviated titleIECON 2011


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