Abstract
Urgency of the research. Due to the widespread use of semiconductor switches in the electrical circuits of modern converters of electricity parameters, the tasks of analysis of electromagnetic processes are significantly complicated. The greatest complications arise when it is necessary to model steady-state and transient processes in branched circuits of variable structure, in which links with reactive elements sinusoidal, constant and pulse voltages occur. Target setting. The mathematical model of the converter can be built using the method of multiparameter modulating functions in the direction of developing new mathematical models of electromagnetic processes in circuits with semiconductor switches and links of sinusoidal, direct and pulsed currents. Actual scientific researches and issues analysis. In the publications of M. Makarenko, V. Senko, N. Yurchenko, А. Scherba and other scientists have developed a method of multiparameter functions that simplifies the evaluation of electromagnetic processes in sinusoidal current circuits with semiconductor switches. Uninvestigated parts of general matters defining. There is a need to develop a multiparameter method for the analysis of transients in electrical circuits with links not only sinusoidal, but also direct and pulsed currents required for the implementation of electromechanical and discharge-pulse technologies. The research objective. Creation of a mathematical model for the analysis of electromagnetic processes in a semiconductor converter with multiband regulation of the output voltage when connecting the phase voltages of the power supply network. The statement of basic materials. The article analyzes the electromagnetic processes in electrical circuits with semiconductor switches. A mathematical model for the analysis of electromagnetic processes in semiconductor converters with pulsewidth regulation of the output voltage is created. Conclusions. A new mathematical model for the analysis of electromagnetic processes in electric circuits of semiconductor converters of modulation type with multichannel band use of phase voltages of three-phase power supply network without taking into account power losses in switches is developed.
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