位相差を有する低周波水平•垂直磁界内の球状人体モデル内部の誘導電流密度解析

抄録

Recently the attention has been paid to low frequency electromagnetic environment. In this paper, effects of phase differences of the magnetic field components on the induced current density in a homogeneous spherical human model exposed to 60 Hz horizontal and vertical magnetic fields have been discussed. First, the effect of phase differences of the magnetic fields on induced current density is remarkable in case those magnitudes are approximately equal. Second, the distributions of the induced current density in the model have been visualized, and it is found that on the special conditions there are points where no current flows in the model and the maximum value exists on the circumference of the surface of the model. Third, the induced current density in the spherical model exposed to magnetic fields under the transmission line becomes maximum at the tower center line and the rnaximurn value depends only on vertical magnetic field because of phase differences of magnetic fields. These results showed that the phase differences of the magnetic fields have an effect on the induced current density in the model exposed to the ordinary magnetic environment. Therefore the discussion on the phase differences of the magnetic field is useful for analysis of induced current density in human exposed to a 3-dimensional magnetic field.