Sichenko V. Development of scientific fundamentals of improving the electromagnetic subsystems compatibility of DC electric traction railways.

Thesis is dedicated to solve scientific and technical problems - improve electromagnetic compatibility of alternative current electric traction subsystems in a high-speed lines that will make possible to improve technical and economic characteristics of transportation process, its efficiency and security. On the basis of experimental studies the author developed mathematical models of disturbances, that will make possible to design and simulate devices of power traction DC supply systems in a more accurate way. The author developed the methodology of active filter, that leads to improve the electromagnetic compatibility of electric DC traction subsystems with adjoining devices of railway infrastructure and with external power supply systems reducing the overall dimensions and installed capacity of the applicable equipment. Expected economic effect of proposed approach exceeded 4 million grn. Proposed results can provide propositions about designing of new energy converters on the basis of combined ideology for modernization of traction substations and power active filters of substations with aging equipment.