Romashko S. Mathematical modelling and simulation of electro- magnetic processes of systems of electrosupply steelmeltig arc of furnaces with devices of control of swіtching and modes

Object of a research: control unit by commutations and modes of systems of electrosupply arc steelmelting furnaces. The purpose of a research: development of mathematical models of a complex of a system of electrosupply arc steelmelting furnaces with control units by commutations both modes and evaluation because of of outcomes of numerical experiments of efficiency of such devices. Methods of a research: methods of mathematical modelling, means of calculus mathematics, computer simulation. Outcomes of researches: the models of structural elements of systems of electrosupply with use aproximation with spline of performances of nonlinear elements are developed; the mathematical model of a system of electrosupply arc steelmelting furnaces in a complex with control units by commutations and modes in contour-nodal coordinates is developed; the technique of planning of active experiments for a research of electromagnetic processes of systems of electrosupply is adapted; the software because of of developed models on the basis of a implicit BDF method with a variable pitch and order are created; the new control unit by commutations and modes is offered. Usage: reconstruction acting and designing new electric steelmelting of aggregates; a research of electromagnetic processes of systems of electrosupply with similar structure of the equipment.