Investigation of electromagnetic current converters for controlling sources of reactive power
Abstract
In this paper, the results of the study of electromagnetic current converters to control the reactive power of power supply systems, which are quite relevant at present, since data devices are used as primary elements of transforming a signal about the work of sources and consumers of power supply systems to ensure uninterrupted operation of electrical equipment.
The distribution of a magnetic stream in the magnetic system of an electromagnetic transducer signal signal is analyzed, that is, the process of converting the primary electric current of the power supply system to the output electrical signal (voltage), which is convenient for reception and processing. This allows you to increase the development of new designs based on digital technology. In the work, the graph model of the magnetic circle transformation of the primary electromagnetic converter allows you to determine the valuesof magnetorus forces in the nodes of this graph model.
The issue of the possibility of a wide use of primary electromagnetic current converters with high accuracy, the linearity of the output characteristics, unified output values, extended spectra of converted values and solved the issue of limiting their use due to the lack of formation of constructs, methods of calculation and design of distributed magnetic systems of current converters. In the work, the dependence of the magnetical force and changes in the magnetic stream, depending on the number of sections of the breakdown of the transformation circle - N, static characteristics when changing the air gap, and the dependence of the output voltage on the number of turns.
As a result, it has been found that the use of a model with distributed parameters increased the accuracy of the calculation of the control signal in adaptive control of hybrid sources of reactive power; Conducted on the basis of graph models, experiments provided a unified value of the output signal with the corresponding established values of the air gap of the magnetic circuit and the number of turns of a sensitive element; The steel value of the control signal relative to the input signal after the inclusion of the primary electromagnetic current converter to the secondary voltage is achieved in the time interval that is lower than the maximum allowable.
