MATHEMATICAL MODELS OF THE ELECTROMAGNETIC PROCESSES PARAMETERS IN THE SWITCHED-MODE INVERTING DC-DC CONVERTERS

Abstract

Every developer of switched-mode electrical energy converter sooner or later faces the need to choose or develop a power inductor. However, today the method of choosing a magnetic core for these devices is very ambiguous fragmented and confused, which significantly increases the development time of these circuits or devices. This leads to the fact that, in practice, the design of switched-mode electrical energy converters is become into an iterative process, which consists in checking all available magnetic cores, with further verification of the obtained result for the technical task. Obviously, such a design method requires considerable time consuming, and its result may be far from optimal. Mathematical models of magnetic core parameters and parameters of electromagnetic processes in power inductors of inverting DC-DC converters are obtained in the article and allowed simulating electromagnetic processes and researching of inverting DC-DC converters with both boundary and continuous modes of operation. The obtained mathematical models are the basis for solving research and design problems of switched-mode DC-DC converters. The article is intended for a wide range of electronics developers, including for specialists engaged in research of switched-mode electrical energy converters. The using of the research results can significantly reduce the design time of both DC-DC and AC-AC switched-mode electric energy converters and increase their main technical and economic parameters.