Electromagnetic compatibility of functional elements of autonomous power supply systems

Abstract

Currently, static power converters are used as part of autonomous power supply systems. System developers deal with electromagnetic compatibility of sources, converters and consumers of electricity, due to the switching of power electronic devices that create electromagnetic interference and deteriorate quality of electricity and cause malfunction of electrical equipment. The article discusses causes of electromagnetic interference and ways to eliminate it. The noise level is reduced due to the use of single-phase-three-phase transformers with a rotating magnetic field and universal static converters as part of static converters, which can reduce the number of power electronic devices in the autonomous system - sources of electromagnetic interference. The basic rules of installation of equipment that reduces the electromagnetic interference were analyzed. An effective method for reducing the electromagnetic interference is application of passive reactive filters at the input and output of static converters, as well as protection of equipment from external electromagnetic fields by electrostatic shields. The methods for reducing the electromagnetic interference will increase the level of electromagnetic compatibility of equipment used as part of the autonomous power supply system.