EMF CANCEL DEVICES FOR WIRELESS POWER TRANSFER SYSTEM USING INDUCTIVE POWER TRANSFER

摘要

The present invention relates to an EMF offsetting device. More particularly, the present invention relates to an EMF offsetting device for a wireless power transfer system using an IPT, which offsets EMF generated in a current supplying device or a current collecting device by adding a specific member on a coil or winding an offsetting coin in an opposite direction. According to the present invention, a current collecting coil or a current supplying coil is properly arranged to wind a separate EMF offsetting coil around each coil. An offsetting magnetic field capable of offsetting EMF which is generated around a current supplying device or a current collecting device and is leaked to the outside, without sensing EMF or independently adding EMF according to the phase of each device. The offset of EMF leaked to the outside can be maximized by adding a specific member to the upper part of an offsetting coil or a main coil.