Retrofit of a hot rolling mill plant with three-level active front end drives

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

doi:10.1109/ias.2017.8101821

Cited by 6 publications

(5 citation statements)

References 24 publications

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“…The peculiarity of contemporary rolling mills involves all powerful adjustable electric drives operating on alternating current FC-SD (frequency converter -synchronous drive), where, in the two-tier structure of the converter, both the input active rectifier (AR) and the output inverter have a similar structure and are made on fully controlled keys: IGBT transistors or lockable IGCT thyristors [26][27][28]. In assessing the EMC of such units, their effect on the supply network, especially in the range of average frequencies of 2500-3250 Hz, along with a determination of the stability of the entire complex, including the converter, drive, and control system, are of practical importance.…”

Section: Features Of Power Supply In Contemporary Electric Drives For Rolling Millsmentioning

confidence: 99%

Power Supply at Metallurgical Iron-and-Steel Works: Features and Development Prospects

et al. 2021

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The article provides a brief assessment of the current state of power supply units at metallurgical plants and prospects for their future development. The principal power-supply problems of at metallurgical enterprises having their own generation of electric energy are briefly outlined. Inherent possibilities for increasing the stability and efficient operation of electrical equipment in metallurgical units are analyzed. Topical issues concerning reactive power compensation and the need to ensure electromagnetic compatibility of powerful nonlinear loads, including electric arc furnaces and rolling mills, are highlighted.

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Section: Features Of Power Supply In Contemporary Electric Drives For Rolling Millsmentioning

confidence: 99%

Power Supply at Metallurgical Iron-and-Steel Works: Features and Development Prospects

et al. 2021

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“…Further, comprehensively grouped into three categories and they are neutral point clamped (NPC), a flying capacitor (FLC) and cascaded H‐bridge (CHB) and the first type of MLI is the NPC type. Going little ahead, a FLC MLI functions with independent capacitors to clamp the device voltage to one‐capacitor voltage levels . The flying‐capacitor topology requires a number of heavy capacitors for its operation.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a novel asymmetrical multilevel inverter optimal hardware components

Dhanamjayulu

Arunkumar

Pandian

et al. 2019

Int Trans Electr Energ Syst

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Summary The paper developed a new topology for the single‐phase asymmetrical cascaded multilevel inverter and realized with optimal hardware components. This solution aids to substantially reducing the number of semiconductor switches and DC sources, henceforth reduces the gate drivers requirement. The proposed multilevel inverter creates a waveform with a high number of staircase voltage levels compromising with low total harmonic distortion at the outputs. The configuration is asymmetric and generates thirty‐one level different output voltages. MATLAB/Simulink numerical software used to verify the modeling and validated experimentally in laboratory scale prototype. The testing of the inverter executed under both steady state and dynamic load changing conditions. A set of numerical and experimental results are provided and shown clear evidence of satisfying the expectation with theoretical development. The proposed converter is well suitable for renewable energy applications. KEYWORDS asymmetrical invertermultilevel inverterrenewable energystaircase modulation techniquetotal harmonic distortionvoltage source inverter.

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“…Control of hot steel rolling mills is of major importance for heavy industries (e.g. the automotive and ship-building industry) or for construction works since it allows to produce metal strips or plates of variable thickness and high strength [1][2][3]. Hot-steel rolling mills are classified among energy-intensive industries and a major objective is to minimise the electric power consumed by them.…”

Section: Introductionmentioning

confidence: 99%

Non‐linear optimal control for the hot‐steel rolling mill system

Rigatos

Zervos

Siano

et al. 2019

IET Collaborative Intelligent Manufacturing

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Control of hot‐steel rolling mills aims at raising the levels of quality of the related industrial production and at minimising the cost of the electric energy consumed by such industrial units. This paper proposes a non‐linear optimal control approach for the hot‐steel rolling mill system. The non‐linear dynamic model of the hot‐steel rolling mill undergoes approximate linearisation around a temporary operating point which is recomputed at each iteration of the control method. The linearisation relies on Taylor series expansion and on the calculation of the system's Jacobian matrices. For the approximately linearised model of the hot‐steel rolling process, an H‐infinity feedback controller is designed. This controller provides the solution of the non‐linear optimal control problem for the system under model uncertainty and external perturbations. For the computation of the controller's feedback gain, an algebraic Riccati equation is iteratively solved at each time‐step of the control method. The global asymptotic stability properties of the control method are proven through Lyapunov analysis. Finally, to implement state estimation‐based control for this system, the H‐infinity Kalman filter is proposed as a robust state estimator.

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Retrofit of a hot rolling mill plant with three-level active front end drives

Cited by 6 publications

References 24 publications

Power Supply at Metallurgical Iron-and-Steel Works: Features and Development Prospects

Power Supply at Metallurgical Iron-and-Steel Works: Features and Development Prospects

Design and implementation of a novel asymmetrical multilevel inverter optimal hardware components

Non‐linear optimal control for the hot‐steel rolling mill system

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