Author:

Keywords:

Wireless power transfer, Public health legislation, Electromagnetic compatibility, Compliance testing

Abstract:

Over the past years, the interest in wireless power transfer with resonant inductive coupling has grown in the consumer electronics industry. Since then, several appliances using this technology have been brought on the market. Most of them are meant for charging handheld devices. In general, a wireless power system consists of a transmitter and a receiver. These devices contain inductively coupled coils that typically resonate at frequencies in the range of tens to hundreds of kHz. Inherent to wireless power transmitters, electrical and magnetic fields are generated in the vicinity of the device. Because of the potential health hazards and electromagnetic interference that these fields may cause, they are subject to certain regulations. However, the regulations for ElectroMagnetic Compatibility (EMC) and the public health legislation are not clearly defined for these devices. This paper studies the currently applicable norms, recent evolutions and possible future normative work in the European Union.