Reserves of Increase of Efficiency of Coal Extraction Sections of Coal Mines

Kopylov, K.N.; Kubrin, S.S.; Zakorshmenniy, I.M.; Решетняк, С Н

doi:10.18796/0041-5790-2019-3-46-49

Cited by 6 publications

(5 citation statements)

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“…A preliminary selection of electric motors requires the construction of load diagrams of mechanisms (static load diagrams) [9,10]. The calculation of the cycle time at the motor pre-selection stage is approximate since it is not yet possible to obtain the acceleration and deceleration time (the total moment of inertia of the drive is unknown before selection of motor) [11,12]. Calculate the parameters of the load diagram for the most powerful mechanism -the combine effector.…”

Section: Calculation and Construction Of Load Diagrams Using The Equimentioning

confidence: 99%

Calculation and Construction of Load Diagrams and Static Characteristics of Multi-Motor Electric Drive System Using Methods of Equivalent Forces and Reduced Moments

et al. 2020

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This paper includes the calculations and construction of load diagrams and static characteristics of individual mechanisms of a mining combine, which form a combined multi-motor electric drive system, using methods of equivalent efforts and reduced moments. The operating forces of idle and on-load mechanisms are calculated, operation time intervals and a complete working cycle are determined. The load diagrams of mechanisms are constructed and their kinematic diagrams are designed. Based on the calculations made, asynchronous motors with a short-circuit rotor, which have the closest power values and are suitable in terms of voltage and operating mode, were selected from the catalogue. The gear reduction ratio is calculated, static resistance moments and operating speeds to the motor shaft are specified. The static characteristics of the most powerful electric motor of a mining combine - effector - are formulated.

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Section: Calculation and Construction Of Load Diagrams Using The Equimentioning

confidence: 99%

Calculation and Construction of Load Diagrams and Static Characteristics of Multi-Motor Electric Drive System Using Methods of Equivalent Forces and Reduced Moments

et al. 2020

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“…In the structure of electricity consumption, the bulk -40% -is spent on mining commercial minerals [26][27][28]. The losses in the transfer of electricity over the public networks are fairly large, their share tops 13%.…”

Section: Electricity Savings Potentialmentioning

confidence: 99%

Energy conservation challenges and potential in Russia’s North-East region

et al. 2020

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The paper discusses challenges and a potential of fuel and energy savings in one of the republics of the North-Eastern region of the Russian Federation. The authors show the challenges of energyand heatsaving, with due account too particular features of Sakha Republic (Yakutia), which include: inconsistency of the actual operating conditions of the equipment with the requirements of regulatory documents in force; problems in supplying the consumers in the decentralized zone. The region’s goals in the segment of energy saving are determined. A detailed assessment of energy-saving potential in the electricity, thermal and fuel saving sectors is carried out. Energy saving is achieved mainly by reducing the losses in general-purpose utility networks, when switching to energy-saving lighting devices, as well as by reducing electricity consumption rate for water pumping, supply and sewage disposal. Heat energy savings can primarily be achieved only by reducing losses in heating services’ networks. Considerable fuel savings can be obtained by reducing the fuel consumption rate in boiler houses and diesel-run power plants. The results show high potential for energy savings in the region. Energyand fuel-intensive activities alone could save the estimated 1 million TOE every year.

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“…To replace the failed electric motors, it was proposed to use Russian counterparts, and so we present their calculations and preliminary selection (Liu et al, 2018;Eshchin, 2019). The preliminary selection of electric motors requires the construction of load diagrams for the mechanisms (Kopylov et al, 2019;Okolnishnikov et al, 2019).…”

Section: Calculation and Construction Of Load Diagrams Using The Equimentioning

confidence: 99%

Calculation of Load Diagrams and Static Characteristics of Multimotor Electric Drive Systems using the Methods of Equivalent Forces and Reduced Moments

Семенов¹,

Yakushev²,

Kharitonov³

et al. 2020

IJTech

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Reserves of Increase of Efficiency of Coal Extraction Sections of Coal Mines

Cited by 6 publications

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Calculation and Construction of Load Diagrams and Static Characteristics of Multi-Motor Electric Drive System Using Methods of Equivalent Forces and Reduced Moments

Calculation and Construction of Load Diagrams and Static Characteristics of Multi-Motor Electric Drive System Using Methods of Equivalent Forces and Reduced Moments

Energy conservation challenges and potential in Russia’s North-East region

Calculation of Load Diagrams and Static Characteristics of Multimotor Electric Drive Systems using the Methods of Equivalent Forces and Reduced Moments

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