Shalileh S. Switch Mode Power Supply Electromagnetic Compatibility Assurance of Electronic Equipment.

Electromagnetic compatibility problems of Switch Mode Power Supply of electronic equipment are investigated. According to a comparative analysis shows that the levels produced by pulse width converter (PWC) is significantly higher than the sensitivity of electronic equipment and acceptable levels of regulatory documents. Based is on complex software Multisim 11 simulations conducted interference PWC non-isolated: buck, boost, buck-boost and PWC earns isolated: flyback, double transistor forward and bridge taking into account the parasitic parameters. Analyzed the electromagnetic environment created by PWC and power wires in a localized volume of the environment. The program compare data produced by PWC conducted interference and the environment with regulatory levels and synthesis of recommendations on the selection power line filters and screens. The possibilities of nano-composite materials for electromagnetic shields are effective in the frequency range from tens of kilohertz to several gigahertz, modernized harmonic filter of expansion band to 30 MHz with an attenuation of 15 ... 25 dB.