Higher Harmonic Components of Rectifiers Magnetic Fields and their Adverse Health Effects

The adverse health effects of magnetic fields affecting electrical personnel are studied; the magnetic field at converter stations is generated by the rectifiers. Harmonic composition of the rectified current is analyzed. The article shows that a rectifier converter is a source of AC harmonic components and has a variety of magnetic forces, whose harmful effects on the staff have not yet been studied. The basic analytical relationships are given, allowing to estimate the levels of harmonic components and induced magnetic field parameters by calculation current. The calculation of magnetic fields based on harmonic components of the rectified current allows comparing the theoretical values against the experimental studies. Following the comparison of theoretical calculations and experimental magnetic field measurements, a conclusion is made about the harmful effects of the magnetic field of certain rectified current harmonics.