Study of the efficiency of conveyors of mining transport systems of mining complexes

Bobojanov, Makhsud; Ziyodulla, Oripovich Eshmurodov; Ismoilov, M. T.; Arziev, Eldor Izam ugli; Togaeva, Gulnoza Ziyodullaevna

doi:10.1051/e3sconf/202017703023

Cited by 16 publications

(12 citation statements)

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“…Higher harmonics (n = 5, 7, 11, 13, etc. ) have a winding factor value much less than unity and its value is close to zero, as a result of which high EDF harmonics (MDF) are significantly reduced [4][5][6][7][8][9][10][11][12][13][14][15]16].…”

Section: Calculation Of the Winding Factor For A Variable Number Of P...mentioning

confidence: 99%

Design of a pole changing winding for asynchronous machines drived on conveyors using the ANSYS Maxwell

et al. 2023

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The article considers the issues of increasing energy efficiency by using multi-speed motors, and also considers the problems of creating pole-changing windings. The procedure for constructing a new two-layer three-phase pole-changing winding with a pole ratio of 4/6, made in 36 stator slots on the basis of the basic switching scheme YYY/YYY, is presented. Based on the results of the analysis of the electromagnetic properties, the optimal winding pitch was selected. An experimental motor with a new pole-changing winding was created on the basis of a magnetic circuit of a serial asynchronous machine of the 4?132?4 type. The analysis of the properties of the electric motor was carried out using the ANSYS/Maxwell program. The results of experimental tests of a new two-speed motor in static and dynamic modes are also presented.

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Section: Calculation Of the Winding Factor For A Variable Number Of P...mentioning

confidence: 99%

Design of a pole changing winding for asynchronous machines drived on conveyors using the ANSYS Maxwell

et al. 2023

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“…Signals are fed to the control electrodes of the thyristors in the power capacitor circuit through a step-down transformer and a contactless voltage relay. The switching of three-phase capacitor banks as a function of voltage is carried out using two such relays, configured for different operating voltages [3,[28][29].…”

Section: Fig1 Capacitor Bank Power Control Circuitmentioning

confidence: 99%

Development and experimental study of circuits of contactless device for automation of compensation of reactive power of capacitor batteries

et al. 2021

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This article presents material based on the results of the analysis of literature sources on automatic devices for regulating reactive power in power supply systems. The operating mode of the compensating devices is determined taking into account the permissible voltage deviations at the terminals of the electric power receivers. Voltage, load current, reactive power directions, power factor, phase angle between the supply voltage and load current, and time can be used as control parameters. In addition, the article provides information regarding the performance of the developed circuits of contactless devices and verification of the experimental study of the operation of installations with their use. Also presented is material on the experimental study of a prototype of a contactless switching device for automatic power control of capacitor banks in various operating modes. Summarizing the results of experimental studies of a new device for automatic power control of capacitor banks, it can be stated that it fully meets the requirements for such devices and can ensure reliable operation of the power supply network with an appropriate power factor.

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“…Thyristor compensators can be used effectively in networks with any schedule of changes in reactive load in conjunction with capacitor units unregulated or with step regulation [11,[24][25][26]35].…”

Section: New Solutions For Controlled Compensating Devicesmentioning

confidence: 99%

New solutions for controlled compensating devices

et al. 2021

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The article presents material, which is based on the results of the analysis of literature sources on automatic devices for regulating reactive power in power supply systems. In addition, this article provides information regarding the operability of the developed circuits of contactless devices and verification of the experimental study of the operation of installations with their use. Also presented is material about an experimental study of a contactless switching device for automatic power control of capacitor banks in various operating modes. A measuring device with programmed control “Fluke” was used to record and process experimental data of non-contact devices for regulating the power of capacitor banks. The results of experimental studies of a new device for automatic power control of capacitor banks, it can be stated that it fully meets the requirements.

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Study of the efficiency of conveyors of mining transport systems of mining complexes

Cited by 16 publications

References 0 publications

Design of a pole changing winding for asynchronous machines drived on conveyors using the ANSYS Maxwell

Design of a pole changing winding for asynchronous machines drived on conveyors using the ANSYS Maxwell

Development and experimental study of circuits of contactless device for automation of compensation of reactive power of capacitor batteries

New solutions for controlled compensating devices

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