Wireless Power Transfer

This second edition follows a first book from 2012 that was warmly received. It surveys the field as it stood when written, covering wireless energy transfer, a subject drawing considerable research interest worldwide. Johnson I. Agbinya wrote most of the chapters, and as before, several others were contributed by guest authors, each a specialist in their particular area of wireless energy transfer.

The revision is broader than the original. Where the first edition had eleven chapters, this one has twenty, with more material on theory and on current industrial uses, particularly magnetic induction. New chapters address ways of reducing power losses, including impedance matching and frequency splitting, along with guidance on building systems that use frequency splitting. A new chapter covers multi-dimensional wireless power transfer, and design methods based on bandpass filtering are added to the existing coupled mode theory and electronic circuit approaches.

Chapters on improving the efficiency of power conversion and induction, controlling power systems, and power relaying, including its applications, carry over from the first edition and have been updated. The text is organised progressively, so earlier chapters prepare the reader for the later ones. Its underlying theory is relevant to inductive near field communication, robotic control and propulsion, induction heating and cooking, and a range of mechatronic systems.