Medium range wireless power transfer links.Part 2: Alternative regimes

In this paper three different operative regimes for a resonant inductive Wireless Power Transfer link are discussed. The first operative regime provides a constant output voltage or current. The second analyzed operative regime adopts a frequency agile operative scheme and is well-suited for applications requiring a performance independent of the coupling coefficient. Finally, the third operating regime provides a load-independent output voltage or current. For all the analyzed cases the relevant equations are illustrated and discussed. Some experimental data are also reported for validation