Electromagnetic Stirrer Operating in Double Axis

Ege, Yavuz; Kalender, Osman; Nazlibilek, Sedat

doi:10.1109/tie.2009.2034676

Cited by 7 publications

(5 citation statements)

References 20 publications

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“…It also allows the different irregularities and variations of the surroundings to be taken into account. Analytical mathematical equations for the calculation of the magnetic field generated by the double-circuit 400 kV overhead transmission line were derived with the aim of verifying the results of modeling [7][8][9][10][11][12][13][14][15][16].…”

Section: Extra High-voltage Double-circuit Electric Power Transmissio...mentioning

confidence: 99%

“…The density of the magnetic field generated by all the current elements idl of the current lead is expressed based on the superposition principle by summing up the constituents of the flux generated by individual current elements [7][8][9][10][11][12][13][14][15]23].…”

Section: Magnetic Field Generated By the Single Thin Current Leadmentioning

confidence: 99%

“…As the magnetic field strength or magnetic flux density is to be found in areas in which there are no currents, LaPlace's equation is solved for the scalar magnetic potential. Such a magnetic field will also be of a potential nature [7][8][9][10][11][12][13][14][15]23].…”

Section: Analysis Of Magnetic Field From 400 Kv Ac Power Transmission...mentioning

confidence: 99%

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Distribution of Magnetic Field in 400 kV Double-Circuit Transmission Lines

Deltuva

Lukočius

2020

Applied Sciences

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A high-voltage AC double-circuit 400 kV overhead power transmission line runs from the city of Elk (Poland) to the city of Alytus (Lithuania). This international 400 kV power transmission line is potentially one of the strongest magnetic field-generating sources in the area. This 400 kV voltage double-circuit overhead transmission line and its surroundings were analyzed using the mathematical analytical methods of superposition and reflections. This research paper includes the calculation of the numerical values of the magnetic field and its distribution. The research showed that the values of the magnetic field strength near the international 400 kV power transmission line exceed the threshold values permitted by relevant standards. This overhead power line is connected to the general (50 Hz) power system and generates a highly intense magnetic field. It is suggested that experimental trials should be undertaken in order to determine the maximum values of the magnetic field strength. For the purpose of mitigating these values, it is suggested that the height of the support bars should be increased or that any individual and commercial activities near the object under investigation should be restricted.

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Section: Extra High-voltage Double-circuit Electric Power Transmissio...mentioning

confidence: 99%

Section: Magnetic Field Generated By the Single Thin Current Leadmentioning

confidence: 99%

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Distribution of Magnetic Field in 400 kV Double-Circuit Transmission Lines

Deltuva

Lukočius

2020

Applied Sciences

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“…Electromagnetic stirring can make the continuous steel casting process more stable, reduce the rate of breakout, and increase the casting speed of the slab. At the same time, it can improve the quality of the product while increasing the output [1][2][3][4][5]. The power supply is the key equipment of electromagnetic stirring, and its current waveform quality and response speed directly affect the quality of continuously cast steel [6,7].…”

Section: Introductionmentioning

confidence: 99%

Research on the High Reliable Electromagnetic Stirring Power Supply

Xiang

Luo

et al. 2021

Applied Sciences

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A reconstructed topology with fault diagnosis and fault-tolerant control strategy of the two-phase quadrature power supply of an electromagnetic stirring system are proposed to improve the reliability of the system. First, if the back stage inverter is faulty, the topology will be reconstructed after the diagnosed fault. The reconstructed topology with the fault diagnosis can be applied twice. Additionally, a fault pulse reset method is proposed to form a fault-tolerant control strategy, for which the high-reliability electromagnetic stirring power supply does not need to switch the control algorithm before and after the failure. The reliability of the electromagnetic stirring power supply is improved greatly. Finally, simulations and experiments verify the correctness of the electromagnetic stirring power supply fault diagnosis algorithm, reconstruction topology, and its fault-tolerant control strategy proposed in this paper.

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“…Nowadays, the structure of two-phase orthogonal power supply (TPOPS) is widely used in the continuous casting process. TPOPS can output two-phase orthogonal currents to power two coils, and then form a rotating EM stirring force to excite a rotary motion of molten steel [5,6]. In terms of the topology of TPOPS, it is always composed of three-phase rectifier and two-phase inverter.…”

Section: Introductionmentioning

confidence: 99%

The Power Analysis and Its Control of Two-phase Orthogonal Power Supply for the Continuous Casting

Ma¹,

Luo²,

Xiong³

2015

Journal of Electrical Engineering and Technology

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In order to improve the quality of the billet continuous casting, a two-phase orthogonal power supply (TPOPS) for electromagnetic stirrer is researched, which is composed of three-phase PWM rectifier and three-leg inverter. According to the power analysis of system, the ripple of dc-link voltage is analyzed and its analytical expression is derived. In order to improve the performance of electromagnetic stirring, an integrated control method with feedforward control is proposed for PWM rectifier to suppress the fluctuations of dc-link voltage and provide a stable dc source for inverter. According to the simplified equivalent model, a composite current control method is proposed for inverter. This proposed method can combine the merits of feedforward control with feedback control to effectively improve the dynamic output performance of TPOPS. Finally, a 300kVA prototype of TPOPS is developed, and the results have verified the analysis and control method.

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Electromagnetic Stirrer Operating in Double Axis

Cited by 7 publications

References 20 publications

Distribution of Magnetic Field in 400 kV Double-Circuit Transmission Lines

Distribution of Magnetic Field in 400 kV Double-Circuit Transmission Lines

Research on the High Reliable Electromagnetic Stirring Power Supply

The Power Analysis and Its Control of Two-phase Orthogonal Power Supply for the Continuous Casting

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