Panchenko V. Improvement of electromagnetic compatibility of a direct current traction substation with contact wire

The object of the research: electromagnetic compatibility of a direct current traction substation with contact wire. The aim of the research: to establish regularities of the influence of the characteristics of a rectifier unit with a booster converter controlled by double-sided pulse-width modulation on electromagnetic compatibility with direct current contact wire. The methods of the research: classical theory of electric; frequency analysis; mathematical apparatus of Z-transformation; imitation computer simulation. Theoretical and practical results lie in the investigation of electromagnetic processes in the system of automatic regulation of a rectifier unit with double-sided pulse-width modulation. The novelty of the work: invariant closed loop system of automatic regulation of output voltage of the rectifier unit with double-sided pulse-width modulation is developed for the first time; the analysis of electromagnetic processes of the rectifier with double-sided pulse-width modulation is further developed; the rectifier impulse model with double-sided pulse-width modulation is obtained for the first time; the expressions used to define the pulsation factors are obtained for the first time. The degree of results introduction: the results of the dissertation research are applied at the state enterprise "Scientific-Research Institute "KhEMZ" (Kharkiv), at educational process at Ukrainian State University of Railway Transport and Education and Scientific Institute retaining and advanced training (Kharkiv). The sphere of usage: scientific and research institutes and enterprises.