In this paper the computer model of the cage induction machine taking into account magnetic non-linearity is presented. The model contains the mathematical model of the induction machine recorded as an S-function and the connecting blocs attaching the model from one side to the three-phase terminals of the supply system model and from the other to the system of mechanical model. Hence, Sim-Power-Systems and Sim-Mechanics libraries can be used. Such a methodology allows for various drives modelling where the induction machine operates as a motor or a generator and cooperates with power electronics system. Using wide range of SIMULINK possibilities the various control techniques can be applied. Using this methodology the own mathematical models of other electrical machines together with the SIMULINK library models can be used.
Degloving injuries consist in detachment of skin and subcutaneous tissue from underlying fascia and muscles. They mostly address total surface of extremities or trunk, resulting in high morbidity and mortality. Their treatment, due to severity of the injury, high percentage of serious concomitant injuries and massive blood loss is time - consuming and its results are often unfavourable. The authors present results of treatment of three cases of patients with degloving injuries of the lower extremities and trunk. The patients presented poor healing prognosis connected with the extension of the injury. A complicated course of treatment was described. In all patients skin grafts healed well, resulting in acceptable aesthetic and functional outcome.
This article presents the results of the analysis of a six-electrode pulse current electric arc furnace (EAF). The characteristics of a power supply system for an EAF are presented for symmetrical states and the most probable asymmetrical states.
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