Comparative Determinations of Magnetic Induction in AC and DC Circuits

摘要

The influence of the electromagnetic field on the human body, although still heavily studied, can have long-term negative effects. The static electromagnetic field is generated by a continuous current source and has a current flow characteristic conventionally set + from -. The variable electromagnetic field is produced by the alternating current and has the ability to change its direction over time with a frequency of 50 or 60 Hz. It is considered that the non-hazardous limit value for the magnetic field (according to Federal Office for Radiation Security in Germany) is 100 microT for 50 Hz and 83 microT for 60 Hz. For the electric field, the exposure limit value is 5kV/m. Electromagnetic fields are not attenuated by obstacles The consumption of electricity is accompanied by their prevalence. The paper aims to determine the values of the magnetic field around the conductors traveled by AC and DC and proposals for its mitigation.