Development of Digital Models of Interconnected Electrical Profiles for Rolling–Drawing Wire Mills

Karandaev, A. S.; Gasiyarov, Vadim R.; Radionov, Andrey A.; Loginov, B. M.

doi:10.3390/machines9030054

Cited by 21 publications

(5 citation statements)

References 31 publications

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“…For example, a 2021 study reported the available opportunities for reducing electric power consumption through the application of developed numerical models describing technological processes of wire drawing. The method is based on the use of the reserves of friction forces that are present during idling [129].…”

Section: Improved Operational Maintenancementioning

confidence: 99%

Energy Efficiency of Induction Motor Drives: State of the Art, Analysis and Recommendations

Dinolova,

Ruseva,

Dinolov

2023

Energies

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Despite activities to introduce low-carbon energy sources worldwide, the share of conventional facilities burning organic fuels remains high. One approach to address this problem is to look for solutions to reduce energy consumption. There are various research projects in the area of energy efficiency that lead to diverse results—such as models, methodologies, new data and theories. On the other hand, induction motor drives are becoming a major consumer of electric power because of their wide range of applications. In this paper, after careful selection and systematization of 151 literature sources, an extensive study and criteria analysis of the existing state of affairs in the area of energy efficiency improvement of induction motor drives has been carried out. Five major and 48 minor research areas in this field have been identified. The results show that issues related to the adaptation of scientific results and the conditions for their effective and wide-ranging application in practice have not been discussed and investigated so far. Adaptation should take into account the possibilities of data acquisition, including data from measurements; the competences of energy managers; and the type of information provided to them. Based on the seven conclusions formulated below, summary recommendations are made to direct future research towards the justification of models for increasing the power efficiency of induction drives, adapted for use by energy managers.

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Section: Improved Operational Maintenancementioning

confidence: 99%

Energy Efficiency of Induction Motor Drives: State of the Art, Analysis and Recommendations

Dinolova,

Ruseva,

Dinolov

2023

Energies

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“…Mathematical models of the UMD and LMD mechatronic systems, developed considering their linkage through metal, have been described in [53][54][55]. Dynamic drive modes at the roll slippage have been studied in [56][57][58].…”

Section: Simulation and Experimental Studiesmentioning

confidence: 99%

Developing Digital Observer of Angular Gaps in Rolling Stand Mechatronic System

et al. 2022

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Algorithms for monitoring the rolling mill mechatronic system state should be developed on the basis of modern digital technologies. Developing digital shadows (observers) of system state parameters in the periodic measurement mode is promising. This study relevance is defined by frequent emergency breakdowns of rolling stand mechanical transmissions. Most breakdowns are caused by worn end clutches (heads) of countershafts (spindles) transmitting rotation from the motor to the rolls. This is caused by elastic oscillations due to closing angular gaps when the metal enters the stand. The spindle joint angular gap increases over time with the mill operation. Therefore, it is an important diagnostic parameter that allows for an estimation of the transmission serviceability. In this regard, the problem of monitoring the angular gaps in the rolling stand mechatronic systems is relevant. The paper considers developing an observer of angular gaps in the spindle joints of the ‘electric drive-stand’ mechatronic system of the plate Mill 5000 of Magnitogorsk Iron and Steel Works PJSC (MMK PJSC). The monitored signal (angular gap) is calculated with the mathematical processing of the motor’s physical parameters (speed and electromagnetic torque), measured at a given frequency. The gap is determined indirectly by integrating the speed during its closing. To achieve this, the speed is controlled according to the triangular tachogram at no load. The stand’s electromechanical system modes have been studied using mathematical simulation. The observer’s practical use expediency has been reasoned. The structure of the observer-based angular gap monitoring information system is given. The system has been full-scale tested on Mill 5000, which has confirmed the developed algorithm efficiency. The study’s contribution is a justified and implemented concept of a relatively simple technical solution that can be commercially implemented without extra costs. The angular gap calculation algorithm does not involve complex mathematical techniques and can be implemented in industrial rolling mill controllers. Monitoring is automated without human involvement, which eliminates the human factor. The solution has a specific practical focus and is recommended for implementation at operating rolling mills.

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“…They also need to be adjusted for how the strip connects different components. The authors' papers [38][39][40] detail parts of the model.…”

Section: Simulation Model Structurementioning

confidence: 99%

Advancement of Roll-Gap Control to Curb the Camber in Heavy-Plate Rolling Mills

et al. 2021

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The quality of steelwork products depends on the geometric precision of flat products. Heavy-plate rolling mills produce plates for large-diameter pipes and for use in shipbuilding, mechanical engineering, and construction. This is why the precision requirements are so stringent. Today’s Mills 5000 produce flat products of up to 5 m in width; the operation of these units shows ‘camber’ defects and axial shift of the roll at the stand exit point. This induces greater loss of metal due to edge trimming and involves a higher risk of accidents. These defects mainly occur due to the asymmetry in the roll gap, which is in turn caused by their misalignment in rolling. As a result, the feed varies in gauge, and the strip moves unevenly. The paper’s key contribution consists in theoretical and experimental substantiation and development of a set of control methods intended to address roll-gap asymmetry. The methods effectively compensate for the asymmetry resulting from the “inherited” wedge, which preexists before the strip enters the stand. They also compensate for the “ongoing” roll misalignment that is caused by the difference in force on the opposite side of the stand during rolling. This comprehensive approach to addressing camber and axial displacement of the feed has not been found in other sources. This paper presents a RAC controller connection diagram that ensures that the roll gap is even across the feed. The paper notes the shortcomings of the design configuration of the controller and shows how it could be improved. The authors have developed a predictive roll-gap asymmetry adjustment method that compensates for the deviations in gauge during the inter-passage pauses. They have also developed a method to control gap misalignment during rolling. The paper showcases the feasibility of a proportional-derivative RAC. The methods have been tested by mathematical modeling and experimentally. The paper further shows oscillograms sampled at Mill 5000 after implementing the developed solutions. Tests confirm far better precision of the screw-down mechanisms on the opposite sides of the stand. This reduces the variation in gauge across the feed and thus curbs the camber defect. As a result, the geometry of the flat improves, and less metal is lost in trimming. The paper further discusses how the RAC controller interacts with the automatic gauge control system. The conclusion is that these systems do not interfere with each other. The developed systems have proceeded to pilot testing.

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Development of Digital Models of Interconnected Electrical Profiles for Rolling–Drawing Wire Mills

Cited by 21 publications

References 31 publications

Energy Efficiency of Induction Motor Drives: State of the Art, Analysis and Recommendations

Energy Efficiency of Induction Motor Drives: State of the Art, Analysis and Recommendations

Developing Digital Observer of Angular Gaps in Rolling Stand Mechatronic System

Advancement of Roll-Gap Control to Curb the Camber in Heavy-Plate Rolling Mills

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