Analysis for Electrical and Thermal Hazard in kW-Class Wireless Power Transmission Environment

With the activation of wireless power transmission, various demands are occurring. As the charging capacity increases, the energy of the loss also increases and this can affect critical hazardous to the neighborhood. Especially, in the case of hundreds ampere of source currents in the kHz band, the electric energy due to the induction current and the heat energy due to the induction heating are at risk in the vicinity. The effect of the neighborhood was determined by setting the unit volume of the cylinder based on the feed cable of 10 m. It was confirmed that 83% of the electric energy efficiency and 17% of the energy loss was contained. Most loss was in the form of thermal energy and electrical energy show relatively little quantity.