Magnetic Femtotesla Inductor Coil Sensor for ELF Noise Signals- ( 0.1Hz to3.0 Hz)

Aparnathi, Rajendra; Dwivedi, Ved Vyas

doi:10.9790/1676-0736576

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Us Isc (10) In accordance with Figure 4 graphically determine the 1.65 / 0.7 2.36 Rs Ohm. Measurement of the series resistance according to the above method can serve as an alternative to the measurement method according to the family of power curves for the solar elements SE and SB [4,[12][13][14][15].…”

Section: Rssupporting

confidence: 65%

“…Most pulsed methods of measuring the voltage-current characteristics are based on the fact that the electronic key used as a field effect transistor changes its resistance in direct proportion to the voltage applied to the gate, which is expressed as a linear dependence of the drain current on the gate-source voltage [5][6][7][8]10,11]. In this case, SB is connected in parallel with the electronic key that is, shortcircuited through the key.…”

Section: Introductionmentioning

confidence: 99%

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Single-pulse method for measuring the current-voltage characteristics of solar panels

Божко

Zashchepkina

Маркін

et al. 2019

Archives of Materials Science and Engineering

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Purpose: The purpose of the paper is to substantiate the new method of measuring the voltage-current characteristics of solar batteries based on the use of a digital oscilloscope and a special linear sweep device. Design/methodology/approach: To solve this problem, a test bench was developed on the basis of a solar radiation simulator. Findings: Practically it is proved that within the duration of a single pulse of 40 μs, it is possible to measure the voltage-current characteristics of an SB with a short-circuit current of up to 5.8 A. Research limitations/implications: The method is relevant for all types of solar batteries, but the measurements were carried out on serial samples of mono and polycrystalline silicon with a nominal output power of 30 to 140 W and a voltage of 12 V. Practical implications: The method can find its practical application in the development of an intelligent solar module. The technology of the intelligent module is based on the periodic removal of information on the operational parameters of the solar battery based on the measured voltage-current characteristic. Originality/value: Experimental confirmation of the effectiveness of the single-pulse measurement method of the voltage-current characteristic of a solar battery based on a linear current sweep.

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Section: Rssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Single-pulse method for measuring the current-voltage characteristics of solar panels

Божко

Zashchepkina

Маркін

et al. 2019

Archives of Materials Science and Engineering

View full text Add to dashboard Cite

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Non-destructive testing of ferromagnetic materials using hand inductive sensor

Deyneka

Tykhan

Маркіна

2019

Archives of Materials Science and Engineering

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Purpose: The need for reliability of industrial structures, machines and other equipment requires more accurate testing of structural materials, especially ferromagnetic materials. Therefore, it is important to improve existing or develop new, more accurate methods and devices for non-destructive testing. Design/methodology/approach: Non-destructive testing of ferromagnetic materials is carried out by surveying a local magnetic field or determining the section magnetic resistance of a material using the proposed new type of sensor as the hand inductive element on a toroidal core with additional magnetic cores. Findings: This sensor has a simple design and high response characteristic, which has been confirmed experimentally. Such a sensor can be used for testing welded joints by the proposed method, which is based on measuring the magnetic resistance of the welding area. Research limitations/implications: Analytical physical processes research that occurred in the magnetic core material of the sensor coil core, used as a sensitive element, is complicated by the nonlinearity of the magnetization curve of the material of the core of the sensitive element and the lack of a single analytical relationship to fully describe the magnetization process of ferromagnetic materials of inductive elements. Therefore, each copy of the sensor will be an individual graduation. Practical implications: The proposed version of the hand inductive sensor allows to perform non-destructive testing during the operation of ferromagnetic structures and without special requirements to external conditions with low costs and the possibility of computer processing of data. Originality/value: The use of the nonlinearity zone of the magnetization curve of the inductive element core material made it possible to obtain a variant of a magnetic sensor that is close in sensitivity to fluxgate and, at the same time, is much simpler in design using non-deficient materials. The use of a ferrite core with low saturation induction requires a small circuit supply voltage, but a generator power reserve. The proposed hand inductive sensor is sensitive to the presence of extraneous ferromagnetic objects, and responds only to a magnetic field. The high magnetic resistance of the inductive sensor allows it to be used on uneven and dirty surfaces. High sensitivity allows to detect small deviations of the magnetic fields of dispersion of a welded joint with their comparison along the entire joint length. All of this gave new opportunities for more accurate non-destructive testing of structural elements and materials.

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Magnetic Femtotesla Inductor Coil Sensor for ELF Noise Signals- ( 0.1Hz to3.0 Hz)

Cited by 2 publications

References 5 publications

Single-pulse method for measuring the current-voltage characteristics of solar panels

Single-pulse method for measuring the current-voltage characteristics of solar panels

Non-destructive testing of ferromagnetic materials using hand inductive sensor

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