Retrofit of a Hot Rolling Mill Plant With Three-Level Active Front End Drives

Orcajo, Gonzalo A.; Rodriguez, D Josue; Cano, José M.; Norniella, Joaquín G.; Ardura, G Pablo; Llera, T Rocio; Cifrian, R Diego

doi:10.1109/tia.2018.2808159

Cited by 20 publications

(4 citation statements)

References 36 publications

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“…In this way, the DC bus is connected to the existing DC distribution circuit in the plant. The remodeling of a traditional hot rolling mill plant by incorporating new technology into its mill drives makes it possible to improve the efficiency and productivity thanks to (a) the elimination of the passive filtering stages responsible for maximizing the displacement factor and minimizing the harmonic distortion rate in the classic installation based on cycloconverters; (b) the dynamic adjustment of the reactive injection/demand according to the reactive setpoints integrated in the facility, which would allow the reactive flows to be canceled, leading to a reduction in the rms current value and therefore a reduction in the losses and an adjustment in the voltage according to the setpoint conditions; and (c) an improvement in the efficiency of the AC/AC conversion and improvement in the controllability of the driven synchronous motor [118].…”

Section: Upgrading Of the Rolling Mill Drivesmentioning

confidence: 99%

Decarbonization Pathways, Strategies, and Use Cases to Achieve Net-Zero CO2 Emissions in the Steelmaking Industry

Rodríguez Diez,

Tomé-Torquemada,

Vicente

et al. 2023

Energies

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The steelmaking industry is responsible for 7% of global CO2 emissions, making decarbonization a significant challenge. This review provides a comprehensive analysis of current steel-production processes, assessing their environmental impact in terms of CO2 emissions at a global level. Limitations of the current pathways are outlined by using objective criteria and a detailed review of the relevant literature. Decarbonization strategies are rigorously evaluated across various scenarios, emphasizing technology feasibility. Focusing on three pivotal areas—scrap utilization, hydrogen integration, and electricity consumption—in-depth assessments are provided, backed by notable contributions from both industrial and scientific fields. The intricate interplay of technical, economic, and regulatory considerations substantially affects CO2 emissions, particularly considering the EU Emissions Trading System. Leading steel producers have established challenging targets for achieving carbon neutrality, requiring a thorough evaluation of industry practices. This paper emphasizes tactics to be employed within short-, medium-, and long-term periods. This article explores two distinct case studies: One involves a hot rolling mill that utilizes advanced energy techniques and uses H2 for the reheating furnace, resulting in a reduction of 229 kt CO2-eq per year. The second case examines DRI production incorporating H2 and achieves over 90% CO2 reduction per ton of DRI.

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Section: Upgrading Of the Rolling Mill Drivesmentioning

confidence: 99%

Decarbonization Pathways, Strategies, and Use Cases to Achieve Net-Zero CO2 Emissions in the Steelmaking Industry

Rodríguez Diez,

Tomé-Torquemada,

Vicente

et al. 2023

Energies

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“…Проблема электромагнитной совместимости мощных электроприводов (ЭП) на базе преобразователей частоты с активными выпрямителями (ПЧ с АВ) стала актуальной в связи с их широким внедрением в металлургической промышленности [1][2][3][4][5]. Эти преобразователи стали использоваться в главных ЭП станов холодной и горячей прокатки.…”

Section: введение unclassified

“…Современные преобразователи строятся на базе полностью управляемых полупроводниковых ключей: IGBT-транзисторах или IGCT-тиристорах [1,[12][13][14]. При значительных мощностях ПЧ применяют жидкостное охлаждение таких ключей, т.к.…”

Section: введение unclassified

Improved Control System Analysis of Frequency Converters Active Rectifiers as a Part of Rolling Mill Electric Drives

Nikolaev¹,

Gilemov²,

Malakhov³

2021

ESC

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“…Gonzalo Alonso Orcajo et al [6][7][8] demonstrated the possibility of reactive power compensation in the grid via the modernization of several main electric drives of hot rolling mill stands. New electric drives feature three-level NPC AFE converters facilitating the electric motors' consumption of active power to maintain the required rolling process and compensate for some of the reactive power consumed by neighboring devices.…”

Section: Introductionmentioning

confidence: 99%

Control over Grid Reactive Power by Using a Powerful Regenerative Controlled-Speed Synchronous Motor Drive

Maklakov

Nikolaev

Lisovskaya

2023

Designs

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The authors propose a technique for reactive power compensation using a powerful regenerative controlled-speed synchronous motor drive (SMD) based on a three-level (3L) neutral point clamped (NPC) active front-end rectifier (AFE) and a voltage source inverter (VSI). The review of technical solutions for reactive power compensation showed that the limitations on the transmitted reactive power in the system under consideration still have not been studied. The paper provides a mathematical description and proposes synthesis-friendly block diagrams of the mathematical 3L-NPC-AFE-VSI and SMD models. The developed models allow defining the instantaneous values of the total 3L-NPC-AFE power consumed from the grid depending on the SMD load diagram. It is noted that the 3L-NPC-AFE-VSI-SMD system is designed without considering the opportunities for reactive power generation. It was determined that the limit value of reactive power generated by a 3L-NPC-AFE depends on the DC link voltage, the grid current consumption and the modulation index. The possibility of reactive power compensation by the SMD system through a 3L-NPC-AFE was experimentally tested on the main drive of a metal plate hot rolling mill. The analysis of the results obtained showed that during the breakdown, an SMD can generate reactive power equal to 16% of the total rated power using a 3L-NPC-AFE at a rated DC link voltage and without overcurrent. It was shown that generating reactive power is expedient in low-load SMD operation modes or at idle. Research in this area is promising due to the widespread use of high-power SMD based on a 3L-NPC-AFE-VSI and the tightening of requirements for energy saving and efficiency and supply voltage quality. The proposed reactive power control technique can be used as part of an industrial smart grid.

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Retrofit of a Hot Rolling Mill Plant With Three-Level Active Front End Drives

Cited by 20 publications

References 36 publications

Decarbonization Pathways, Strategies, and Use Cases to Achieve Net-Zero CO2 Emissions in the Steelmaking Industry

Decarbonization Pathways, Strategies, and Use Cases to Achieve Net-Zero CO2 Emissions in the Steelmaking Industry

Improved Control System Analysis of Frequency Converters Active Rectifiers as a Part of Rolling Mill Electric Drives

Control over Grid Reactive Power by Using a Powerful Regenerative Controlled-Speed Synchronous Motor Drive

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