electric mode

System of adaptive fuzzy control of the electrical mode of the arc steel arching furnace

The electrical mode (ER) of arc steel-melting furnaces (ASF) is characterized by a dynamic, random, non-stationary, phase-by-phase asymmetric and phase-by-phase interconnected nature of the change. Control takes place in the conditions of incomplete information about the state of the ER and the technological process and changes in the parameters of the elements of the power circuit and the three- phase system of arcs.

Theoretical basis of energy efficiency criterion-based optimal control of arc steel-melting furnace modes taking into account 3-dimensional phase current distribution

The purpose of the article is to develop a method for synthesis of the operative adaptive optimal control of the electric mode (EM) of an arc steel-melting furnace (ASF) by energy efficiency criteria based on three-dimensional (3-D) distribution of arc currents. The basis of the created method is the use of operative information on the parameters of 3-D distribution of arc currents and the search for the appropriate optimal control – set points for arc currents of a double-loop system of controlling the electric mode of an arc steel-melting furnace.

Optimal control of the electrical mode of an arc furnace on the basis of the three-dimensional vector of phase currents

In the paper, based on the Fokker--Planck--Kolmogorov equation and the statistical control theory, a mathematical model for the operative synthesis of optimal controlling influences for stabilization of the electric mode of an electric arc furnace in a two-contour structure with a high-speed electric circuit for regulating the arc currents is suggested.