Loop type EMF shielding apparatus comprising automatic controller, power supply and pick-up including the loop type EMF shielding apparatus, and EMF shielding method by using the loop type EMF shielding apparatus

摘要

The present invention relates to an electromagnetic wave shielding device of a loop type having an automatic control device, a power feeding device and a current collecting device having the same, and an electromagnetic shielding method using a loop, and more particularly, a capacitance of a capacitor connected to a loop. The present invention relates to an electromagnetic wave shielding device having a loop type, and a power feeding device and a current collecting device having the same, and an electromagnetic shielding method using a loop. According to the present invention, in a wireless power transmission device in which a magnetic field generated by a relative position is changed by movement, such as a power supply device embedded in a road surface and a current collector installed in a vehicle, the capacitance of a capacitor connected to the electromagnetic shielding loop ( capacitance) can be automatically controlled to achieve optimum shielding conditions.