VARIANTS AND TRANSFORMATION OF STRUCTURES OF SINGLE PHASE TRANSFORMERS AND REACTORS WITH A WINDING MAGNETIC CORE
Journal Title: Вісник Кременчуцького національного університету імені Михайла Остроградського - Year 2017, Vol 1, Issue 103
Abstract
Purpose. To substantiate the technical solutions included in the production and based on the analysis of the ways of reduc- ing the mass indexes and the loss of active power of single-phase induction static devices with a twisted magnetic core. Methodology. For solving the tasks of the practical use of new technical decisions of active part of transformers, the ground of their advantages is needed. The method of optimizing comparative analysis at the observance of electr o- magnetic equivalence principle is chosen electromagnetic system (EMS). The identity of power, electromagnetic load and voltages of windings, and also installation and execution of compared EMS are corresponding to this pri n- ciple. Results. The basic technical decisions of the electromagnetic systems of single-phased transformers are anlysed. It is indicated that the existent twisted single-phased induction static devices do not satisfy in a sufficient degree to the requirements of compactness and reliability of electrical engineering and radio electronic devices. The improvement and increase of indexes of compactness of inductive static devices (ISDs) at the use of traditional methods and variants of "non-waste" technology of production of magnetic cores can be obtained on the basis of structural optimization of EMS with unconventional configurations and spatial position of rods, yokes and windings’ coils. Originality. Structural transformation of single-phased induction static devices with twisted magnetic core is considered for the first time with the purpose to reduce the resource-demanding and increase of reliability. Trans- formation of structures is based on using the combined twisted elements of trapezium-shapedsection of hexahedral- formed sections of rods. Thus the durability of isolation increases depending on the change of bend of coils’ turns in angular zones from 90° to 120°, and also the material capacity of windings decreases. Practical value. The offered decisions and method of structural optimization will give an opportunity to reduce the mass-dimension indexes and active-power losses of ISDs with twisted magnetic core for the systems of electrical equipment of different tech- nique. References - 9, figures - 4.
Authors and Affiliations
О. Sadovoy
Keywords
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