This use of magnetic material and some metal plates.

This
thesis is dealing with the wireless power transfer which topic is gaining
maximum popularity nowadays. It is based on resonant inductive coupling with
the use of magnetic material and some metal plates. In the recent years, many
applications are introduced with the help of this technology due to the energy
crisis. It can be used to transfer power or charge motionless, moving objects
and also for automobile. After the optimization and testing this technology
with different techniques, now it can take place the old energy transfer
method. Wireless power transfer has an advantage in which there is no need of any
metal object, wood etc. or granite that must be exist between the coils. we can
transfer power anywhere through the air medium, while the long-established
method have also some problems in case of a bad environment or the loss of any
medium can break the whole connections. Further, the maximum power can be transfer
and the current rate will be stable and reliable with their electrical & electronic
components.  

Build
experimental device platform, verify the theoretical analysis. The influence of
resonant coils with different structures on the energy transfer of the resonant
system and the best inductance that enables the inverted soft-switching to work
normally and maintain high energy transfer efficiency is verified by
experiments. Ultimately achieved through experiments in the 10cm distance, the
transmission efficiency of more than 90%.  
In the design of the output side of the high-frequency excitation
source, in order to make the power switch of the invert er circuit in the
soft-switching state, it is necessary to make the output side weak sensitivity,
that is, adding an inductance coil on the output side to output a more stable
voltage. However, increasing the inductance coil in the system will affect the
resonance frequency and the transmission efficiency of the resonance system to
a certain extent, so a suitable inductance needs to be selected for the matching
design

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