Improving Energy Performance in Networks with Semiconductor Converters

Shevyrev, Yu. V.; Pichuev, Alexandr; Shevyreva, N. Yu.

doi:10.1109/icieam.2019.8743020

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…В работах, посвященных анализу электропотребления на горных пред приятиях, в том числе на карьерах и разрезах, используются статисти ческие методы, и в них, как правило, рассматриваются «пространствен ные» модели, т.е. без учета фактора времени [2,3,4,5,6,7,8,9,10,11,12]. Вопросам прогнозирования электропотребления предприятий минерально-сырьевого комплекса посвящены работы [13,14,15,16].…”

Section: Introductionunclassified

Statistical Analysis and Predictive Modelling of Electric Power Consumption of Excavators and Sites of a Coal Strip Mine

Karpenko,

Ematin

et al. 2024

Ugol'

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SURFACE MINING • открЫтЫЕ раБотЫАннотация В статье приводятся результаты статистического анализа и прогнозного моделирования электропотребления экскаваторов и участков угольного разреза. В соответствии с предложенной методикой проведено исследование структуры рядов электропотребления и объемов работ, построены модели авторегрессии с распределенными лагами краткосрочного прогнозирования электропотребления экскаваторов и участков с учетом производственных факторов. Произведена верификация моделей, оценена прогностическая способность, рассчитаны показатели точности МАРЕ, определен модельный вклад каждого экскаватора в прогнозируемые объемы электропотребления участков для повышения точности прогноза. Предложенный подход позволяет учитывать индивидуальные особенности потребителей электроэнергии при краткосрочном прогнозировании электропотребления, улучшить показатели качества и точности прогнозов как по отдельным подразделениям, так и по предприятию в целом, повысить эффективность планирования электропотребления и снизить затраты при оплате за электроэнергию.

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Section: Introductionunclassified

Statistical Analysis and Predictive Modelling of Electric Power Consumption of Excavators and Sites of a Coal Strip Mine

Karpenko,

Ematin

et al. 2024

Ugol'

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“…P_40_416/105736, 2016-2021. conversion, mainly due to the limitations imposed by the parameters of power components. Nowadays, there are few applications in the industry that use these semiconductors in from DC to AC converters [1]- [3].…”

Section: Introductionmentioning

confidence: 99%

Three-Level Inverter Control Techniques: Design, Analysis, and Comparisons

Selişteanu

Roman

Mandache

et al. 2021

ELEKTRON ELEKTROTECH

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This work addresses the analysis and design of various Proportional-Integral-Derivative (PID) control techniques for a three-level inverter. Multilevel power converters are modern and basic elements of high-voltage electric drive and power supply systems. By using simulations and specific computer-aided design tools, the overall functional characteristics of multilevel converters, as well as the electrical demands of the components, can be accurately assessed to obtain an appropriate control solution. An innovative and detailed software model of a three-level inverter is developed and then used for the implementation of control techniques. Several tuning methods are used to tune PID controllers for two specific cases: the multilevel inverter with a linear load and with an asynchronous motor load, respectively. A detailed analysis and comparisons of the quality criteria and control performance are achieved. This analysis shows that the choice of controller type depends on the inverter load. For the linear load, proper results are obtained with a PI Nichols-tuned controller, and for the asynchronous load, with a PI controller tuned via a modified Hokushin method. The computer-aided design tools can be further used for the simulation of the equipment in various operating conditions, normal and fault, following all functional parameters.

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“…Научные исследования показывают, что уровень и состав ВГС в значительной степени зависят от протяженности питающей линии, мощности преобразователей частоты (ПЧ) и нагрузки асинхронных электродвигателей, наличия ПЧ на сопряженных участках и т. д. [5][6][7][8].…”

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Assessing the efficiency of measures to enhance electric power quality in variable-frequency drive for scraper conveyors

Petrov,

Pichuev

2024

Min.Sci.Technol. (RUS)

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The intensive implementation of variable-frequency drive machines and installations in underground mining processes necessitates addressing several issues, with a primary focus on ensuring the quality of electric power. Elevating the energy resource of mining machines and enhancing the energy efficiency of mining operations requires maintaining the rated indicators of electric power quality in mine power distribution systems. Achieving this involves assessing the level and composition of higher harmonic components in voltage and current within power circuits equipped with variable-frequency drives (VFD). Key objectives encompass the development of a simulation model based on the equivalent diagram of the power distribution system substitution with a scraper conveyor VFD to scrutinize the spectral composition of higher harmonic components in the power circuits of the mine power distribution system (MPDS). Additionally, the study involves analyzing the impact of harmonic filters (HFs), reactors, and sine filters on the quality of electric power in the VFD system of a scraper conveyor. Further analysis extends to the spectral composition of higher harmonic components in circuits related to insulation leakage and metering circuits of the residual-current device. Practical recommendations for improving electric power quality in the VFD system of a scraper conveyor are then developed based on the research findings. The established model of a variable-frequency drive system for scraper conveyors facilitates the assessment of the effectiveness of electric power quality improvement measures. The harmonic composition of voltage and current in the mine power distribution system is determined under maximum distortion conditions and in the presence of HFs, reactors, and sine filters. Research methods are chosen to unveil the spectral composition of voltage and current in symmetrical and single-phase modes of insulation leakage, as well as in metering circuits of residual-current devices (RCDs). It is noted that the harmonic composition of leakage voltage and current is primarily influenced by the parameters of the output voltage modulated by the autonomous frequency converter inverter. Considering the high level of harmonic components in voltage and current, adjustments to RCD settings, capacitive current compensator, and the protective shunting unit are recommended for electrical safety. The study emphasizes the importance of scientifically substantiating the rated indicators of higher harmonic components for leakage circuits and further exploring the physiological effects of higher current harmonics on the human body. The feasibility of installing a harmonic filter (HF) directly on the low-voltage supply section of a scraper conveyor should be technically justified. Interestingly, the presence of HFs, reactors, and sine filters does not significantly impact the harmonic composition or the magnitudes of coefficients of the harmonic components in the phase voltage of the system concerning ground and leakage currents through insulation. However, higher harmonic components induced in leakage current circuits may pose a potential hazard, leading to a violation of magnetic compatibility and posing risks in case of contact with live parts of electrical equipment.

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Improving Energy Performance in Networks with Semiconductor Converters

Cited by 7 publications

References 5 publications

Statistical Analysis and Predictive Modelling of Electric Power Consumption of Excavators and Sites of a Coal Strip Mine

Statistical Analysis and Predictive Modelling of Electric Power Consumption of Excavators and Sites of a Coal Strip Mine

Three-Level Inverter Control Techniques: Design, Analysis, and Comparisons

Assessing the efficiency of measures to enhance electric power quality in variable-frequency drive for scraper conveyors

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