ERRORS OF UNIVERSAL CONTACTLESS CONVERTERS OF MONITORING AND CONTROL SYSTEMS FROM EXTERNAL MAGNETIC FIELDS

Ya. Meliboev

doi:10.5281/zenodo.6634364

ERRORS OF UNIVERSAL CONTACTLESS CONVERTERS OF MONITORING AND CONTROL SYSTEMS FROM EXTERNAL MAGNETIC FIELDS

11.06.2022 International Scientific Journal "Science and Innovation". Series A. Volume 1 Issue 2

Ya. Meliboev

Abstract. In communication and communication devices, power equipment, relay protection and automation terminals, in the electric power industry of “smart” cities and houses, in industry, in railway transport, microprocessor relay protection and automation devices, distributed generation installations, including renewable energy sources, and storage devices are beginning to be used. electricity, as well as "intelligent" automated information and measurement systems. They widely use non-contact converters of direct and alternating currents of monitoring and control systems. Their disadvantages are a narrow range of controlled currents, large dimensions and weight. Therefore, it is important to eliminate them. The paper considers the general principles for constructing non-contact high DC converters, the main requirements for them, and shows the results of developing one of the options proposed by us, universal non-contact magneto-modulating high DC converters with an extended range for various monitoring and control systems. They differ from the known extended controllable range with small dimensions and weight and increased accuracy and sensitivity. The converter has a simple and technologically advanced design with low material consumption and cost, and can non-contactly control large direct currents, as well as alternating currents. The paper considers errors from external magnetic fields of universal contactless transducers of monitoring and control systems. It is shown that the error from the external magnetic field does not exceed 0.08% if the number of sections of the measuring winding is even and with their symmetrical arrangement, and with their even increase, the error decreases.

Keywords: non-contact measurement, magneto-modulation converter, meter verification, renewable energy sources, laser installation, detachable magnetic circuit, integrating circuit, distributed magnetic parameters.

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