Efficiency of variable frequency drive in diamond mining

Egorov, A. N.; Kharitonov, Ya.S.; Семенов, А С; Fedorov, Oleg

doi:10.17580/gzh.2019.02.16

Cited by 25 publications

(6 citation statements)

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“…With a view to saving the capital investments for the upgrade and considering the insufficient power of the department networks for 0.4 kV, the enterprise managers decided to install high voltage frequency converters. However, in [14] the authors proved that low voltage frequency converters would be more economical, even taking into consideration the extra costs for purchasing low voltage electric motors and two standard transformer stations. This is due to the significant reduction of expenses for the frequency converter maintenance and repair, spare parts, tools and accessories.…”

Section: Research Resultsmentioning

confidence: 99%

The impact of higher voltage and current harmonics on the operation of electrical systems

Egorov¹,

Kharitonov²,

Khubieva

et al. 2019

E3S Web Conf.

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The article deals with the assessment of impact of higher harmonics on the operation of variablefrequency electric drive systems used in processing units at mining enterprises. Beyond that, energy efficiency and operation experience of variable-frequency electric drive usage at mining enterprises were studied. The advantages and drawbacks of implementation of variable-frequency electric drive systems were found. They include energy saving and reducing maintenance costs for processing units on one hand, as well as losses due to their incorrect selection and electromagnetic compatibility distortion on the other hand.

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Section: Research Resultsmentioning

confidence: 99%

The impact of higher voltage and current harmonics on the operation of electrical systems

Egorov¹,

Kharitonov²,

Khubieva

et al. 2019

E3S Web Conf.

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“…On the oth er hand, frequency con verters distort voltage from its sine waveform in power networks [10][11][12]. The cause of that is generation of higher harmonics by the frequency converters.…”

Section: The Use Of Frequency Converter and Active Rectifier Of Volta...mentioning

confidence: 99%

The use of frequency converter and active rectifier of voltage for the power quality improvement in coal longwalls

Shevyreva¹,

Shevyrev²,

Bobokin³

2022

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“…Calculate the parameters of the load diagram for the most powerful mechanism -the combine effector. Similarly obtained results for other mechanisms will be summarized in a table for the ease of construction of load diagrams [13][14][15].…”

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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Efficiency of variable frequency drive in diamond mining

Cited by 25 publications

References 0 publications

The impact of higher voltage and current harmonics on the operation of electrical systems

The impact of higher voltage and current harmonics on the operation of electrical systems

The use of frequency converter and active rectifier of voltage for the power quality improvement in coal longwalls

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

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