A linearised model of the power system with the Electrical Arc Furnace (EAF) and the Unified Power Quality Conditioner (UPQC) has been used in the frequency domain for finding an optimum control strategy of the UPQC. The analysis indicates that the most effective may be such an application of the UPQC where the parallel Active Filter (AF) compensates the whole reactive power consumed by the EAF...

A recursive algorithm is proposed in this paper to identify Hammerstein–Wiener systems with heteroscedastic measurement noise. Based on the parameterization model of Hammerstein–Wiener systems, the algorithm is derived by minimizing the expectation of the sum of squared parameter estimation errors. By replacing the immeasurable internal variables with their estimations, the need for the commonl...

Different wastes are generated in ferromanganese and silicomanganese alloy production. One of them is the ultrafine oxidized dust (UOD) produced in the collection and control of flying dusts in the ferroalloy industry. This waste has fairly high manganese content (20%–40% Mn), making it suitable to be a secondary raw material for the ferromanganese industry. This research proposes a method for ...

The electrical arc furnace (EAF) load is the largest load in power systems. Since electromechanical interactions between electrical loads and turbine-generator are seldom discussed, this paper investigates the torsional vibrations in turbine-generator shafts and blades subject to real and reactive power variations from a large-scale EAF plant. The transient power fluctuation of the load is rand...

Steel pipes with circular cross-sections are usually used in cooling panels of electric arc furnaces. In the present study pipes with square cross-sections under equivalent conditions were used to obtain more information on the possibility of increasing the heat transfer and cooling efficiency. The results showed increased efficiency of the square pipe compared to the circular cross-section pip...

Large single crystals of pyrochlore [Formula: see text] were successfully grown by the floating zone technique using an optical furnace equipped with high power xenon arc lamps. Structural investigations were carried out via powder synchrotron x-ray and neutron diffraction to establish the crystallographic structure of the materials produced. The magnetic properties of the single crystals were ...

We present the results of a telephone survey of electric arc furnace (EAF) steel producers. This report characterizes the current status of EAF dust generation, treatment and disposal. It indicates the quantity generated, zinc content, other relevant constituents, and plans and trends that will impact on the quantity and characteristics of the dust generated. The survey covers EAF based steel p...