Wireless Power Transfer for Battery Charging of Electrical

Abstract

Inductive power transfer (IPT) is a nonradiative
near range technique of transferring power
when primary and secondary coils are in close proximity
and positioned carefully with respect to each other. This
paper describes the technique of Resonant inductive
power transfer (RIPT) which is in contrast to “induction”
by its ability to transfer power efficiently over a
reasonable distance which is required to charge Electric
Vehicle battery and to overcome the positional offsets.
Thus, this technology is also known as “magnetic
resonance”. This system can transfer power wirelessly
over a distance of 10cm-20cm which is the typical ground
clearance of Electric Vehicles. For increasing the
efficiency of RIPT systems, series-series compensation
topology is used giving the efficiency of about 85%.