Mohammad Etemadrezaei North Carolina State University, Raleigh, NC, United States
This chapter covers different methods of wireless power transfer (WPT) with the main focus on weakly coupled inductive WPT systems. Such systems are increasingly getting popular due to the advantages they bring compared with wired power transfer. A typical two-coil inductive WPT system is analyzed, and the system parameters such as magnetic link efficiency are derived. Various WPT resonance topologies for both primary (transmitter) and secondary (receiver) coils are reviewed. Main elements of the system including high-frequency (MHz region) inverters such as class-D and class-E are explained. The WPT systems with multiple ...
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