Estimation of the error of a magnetic modulation non-contact wide-range device for non-destructive control of high amperage currents

Plakhtiev, Anatoliy; Baratov, Rustam; Gaziev, Gayratjon; Doniyorov, Odil; Norkholboyev, D. Sh

doi:10.1088/1755-1315/614/1/012028

Cited by 7 publications

(6 citation statements)

References 1 publication

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“…From the family of magnetization curves shown in Figure 2, it can be seen that the shape of the curves shown in Figure 2 for all values is similar to the curves shown in (magnetic circuit magnetization [21]. The analysis of these experimental curves showed that if the magnetic material of the samples is isotropic, and the samples have the same geometric dimensions, the same values of the signals both at direct and alternating current, taking into account the influence of the windings (especially in a magnetic circuit with longitudinal modulation), then the same magnetization curves of the magnetic circuit are obtained for both longitudinal and transverse modulation.…”

Section: Analysis Of the Resultssupporting

confidence: 54%

Experimental research of magnetic circuits of current converters taking into account the nonlinearity of magnetic characteristics

Safarov

Sattarov²,

Mustafoqulov³

et al. 2022

J. Phys.: Conf. Ser.

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The article is devoted to the development of methods for calculating magnetic circuits of current converters taking into account the nonlinearity of magnetic characteristics. At the same time, magnetic systems of current converters are of great interest, which, according to the principle of their operation, are magnetized simultaneously by constant and alternating magnetic fields (magnetomodulation converters). Analytical expressions of the magnetization curves of magnetic materials are proposed, experimental schemes are presented, and the feasibility of using a combination of oscillographic and wattmeter methods, the convergence of the calculated and experimental data are shown.

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Section: Analysis Of the Resultssupporting

confidence: 54%

Experimental research of magnetic circuits of current converters taking into account the nonlinearity of magnetic characteristics

Safarov

Sattarov²,

Mustafoqulov³

et al. 2022

J. Phys.: Conf. Ser.

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“…Currently, to identify the asymmetry of three-phase currents, CMC are used, having various designs based on various physical effects (on the magneto modulation effect, Hall effect, transformer effect, etc.) [5][6][7][8][9][10].…”

Section: Methodsmentioning

confidence: 99%

A device for detecting current asymmetry in a three-phase alternating current system

et al. 2023

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The article discusses the issues of identifying the asymmetry of currents in a three-phase alternating current system. The design of a current converter designed to detect the unevenness of the current load in parallel branches of the current lines of various power equipment is proposed. It is shown that a positive effect is achieved by making the magnetic circuit four-rod and the introduction of rectangular cutouts with modulating and output windings on two central rods of the magnetic circuit and it is possible to determine the unevenness of the current load of three parallel branches before (in three-phase AC circuits) or after rectifier-converter installations (in DC circuits), therefore, the functionality of the device for detecting current asymmetry is expanded.

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“…Figure 1 partially shows one of the variants of the developed CWC with basic dimensions. This design was developed based on CC [32] and is a CWC with transversely and longitudinally distributed magnetic parameters. It is characterized by increased sensitivity and an extended range of converted currents.…”

Section: Methodsmentioning

confidence: 99%

Contactless wide-range ferromagnetic high-current converters for monitoring and control systems in the electric power industry

et al. 2023

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The paper shows that the impossibility of breaking the current circuit for the production necessity of temporarily switching on electrical measuring instruments, large power losses on shunts, and the need to obtain quick information about the quality of the functioning of technological processes have led to the widespread use of non-contact conversion and measurement of high direct currents in circuits without breaking them. Light detachable wide-range stationary and portable non-contact transducers and meters of high direct currents are not yet mass-produced. In this regard, it is expedient to develop and study non-contact converters and meters of high direct currents, which are distinguished by a wide range of converted currents, small dimensions and weight, increased accuracy, and sensitivity of electric power facilities. The questions of sensitivity of magneto-modulation non-contact transducers are considered. The expression for the optimal static characteristic of the developed magneto-modulation non-contact transducer is determined and analyzed. Its maximum deviation from the calculated value does not exceed 6%. The expressions for the current, average sensitivity, and sensitivity regarding the magnitude of the excitation of a magneto-modulation non-contact transducer are obtained and investigated. In this case, the maximum sensitivity of the transducer reaches a value of 0.425 with an optimal excitation value of 1.65. It is recommended to take the allowable limit of the input value of the converter to be less than one. Its input value must be taken equal to 0.7. The developed magneto-modulation non-contact transducer has an increased sensitivity due to longitudinal modulation. It can be widely applied in control and management systems in melioration and irrigation, water supply, industry, metallurgy, railway transport, science, technology, GIS technology, and, in particular, digital coverage and database visualization, and as well as for checking electric meters at the place of their installation for non-contact control of direct, as well as alternating currents.

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Estimation of the error of a magnetic modulation non-contact wide-range device for non-destructive control of high amperage currents

Cited by 7 publications

References 1 publication

Experimental research of magnetic circuits of current converters taking into account the nonlinearity of magnetic characteristics

Experimental research of magnetic circuits of current converters taking into account the nonlinearity of magnetic characteristics

A device for detecting current asymmetry in a three-phase alternating current system

Contactless wide-range ferromagnetic high-current converters for monitoring and control systems in the electric power industry

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