ABSTRACT
This chapter provides an overview of the state-of-the-art wireless power-transfer technologies and applications before presenting the development of a wireless charging system. The foundation of the operating principles of near-field magnetic induction (NFMI) trace back to the early nineteenth century. More specifically, there are two laws that lay the theoretical foundation of the near-field magnetic flux coupling form of wireless power transfer. Faraday’s law implies that an electromotive force (EMF) is induced in any closed circuit through a time-varying magnetic flux through the circuit. In fact, the EMF generated is proportional to the rate of change of the magnetic flux. The associated approximate solution to the partial differential and integral equations of each element is then solved for minimum potential energy. The resulting simulation outputs provide a qualitative and quantitative visualization and frequency analysis of various magnetic parameters related to NFMI systems.
