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The article discusses the issues of improving the quality of electricity in the networks of nontraction railway consumers through the use of energy routers. Model studies of the electricity supply system of railways with high-frequency routers were carried out. Results have been obtained that allow using energy routers to supply electricity to plants of railway consumers with increased requirements for electric power quality. The article presents the results of the calculation of the high-frequency transformer and its experimental characteristics obtained in the study of high-frequency electrical plants of consumers.

The paper discusses current issues on the inverters peculiarities in the frequency converter. Theoretical studies have been carried out to determine the influence of the induction motor mode on the current modulation in the DC link. The authors suggest a calculation technique to determine the form of transient current characteristics when exposed to a single pulse of the inverter. Model studies of the system, calculation and construction of current characteristics proved the correspondence of theoretical and practical results. The research results determined the relationship between the current modulation in the DC link and the induction motor mode of operation.