Arc Voltage Distortion as a Source of Higher Harmonics Generated by Electric Arc Furnaces

Olczykowski, Z.

doi:10.3390/en15103628

Cited by 7 publications

(5 citation statements)

References 25 publications

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“…As a result, a rectangular arc voltage waveform is obtained in each half of the period. The adopted arc model refers to the multi-voltage model presented by the author in the publication [23], consisting of mapping the arc with a system of series-connected voltage sources of higher harmonics:…”

Section: Assumptions Adopted For the Calculation Of Power-voltage Cha...mentioning

confidence: 99%

Arc Furnace Power-Susceptibility Coefficients

Olczykowski

2022

Energies

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The article presents the susceptibility coefficients active power kp and reactive power kq, as proposed by the author. These coefficients reflect the reaction of arc furnaces (change of the furnace operating point) to supply voltage fluctuations. The considerations were based on the model of the arc device in which the electric arc was replaced with a voltage source with an amplitude dependent on the length of the arc. In the case of voltage fluctuations, such a model gives an assessment of the arc device’s behavior closer to reality than the model used, based on replacing the arc with resistance. An example of the application of the kp and kq coefficients in a practical solution is presented.

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Section: Assumptions Adopted For the Calculation Of Power-voltage Cha...mentioning

confidence: 99%

Arc Furnace Power-Susceptibility Coefficients

Olczykowski

2022

Energies

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“…• Model-based control: advanced mathematical models are used to simulate the behavior of the arc furnace, allowing for more precise control of the process variables such as temperature, chemistry, and slag viscosity. Model predictive control (MPC) algorithms are commonly used to optimize the furnace operation and reduce energy consumption [18,19].…”

Section: Introductionmentioning

confidence: 99%

Study and Analysis of Dynamics and Energy Efficiency of Arc Steelmaking Furnace Electrical Mode with a Fuzzy Control Algorithm

2023

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A review of the control laws (models) of alternating current arc steelmaking furnaces’ (ASF) electric modes (EM) is carried out. A phase-symmetric three-component additive fuzzy model of electrode movement control signal formation is proposed. A synthesis of fuzzy inference systems based on the Sugeno model for the implementation of the proposed additive three-component fuzzy law of arc length control is performed. A structural computer Simulink model of the EM control system in a high-power arc steelmaking furnace of the DSP-200 type with an ARDM-T-12 arcs power regulator is created. Computer research into control dynamics indicators under the influence of deterministic perturbations and also integral indicators of energy efficiency when handling stationary random arc lengths fluctuations (corresponding to various technological stages of melting) are carried out. A comparative analysis of dynamics indicators, energy efficiency, and electromagnetic compatibility of the proposed fuzzy and known differential model of ASF arc lengths control is carried out. The implementation of the proposed fuzzy three-component additive control model in comparison with the existing deterministic differential one reduces the dispersion of voltages, currents, and arcs powers, reduces electrical losses in an arc furnace high-power network by 10–22% and increases the average arc power by 0.9–1.5%.

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Section: Introductionmentioning

confidence: 99%

“…Many articles have discussed the power quality issues of DC and AC electric arc furnaces [6][7][8][9][10][11][12][13][14][15][16][17][18]. However, most of the research has been in the field of AC electric arc furnaces [6][7][8][9][10]. In [12], IGBT-based rectifiers and thyristor-based rectifiers are compared for DC electric arc furnace plants in terms of dynamic response, arc stability, and THD index.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Evaluation of Different Power Quantities in DC Electric Arc Furnace Power Supplies

2023

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Conventionally, DC arc furnaces are fed by thyristor rectifiers to control the level of current or power transferred to the load. With the advancement of high-power transistors, other structures such as diode rectifiers and DC choppers have been introduced and developed for the feeding system of DC electric arc furnaces. In this paper, the effect of different power supply systems on power quality indexes is discussed. In this regard, two types of feeding systems are considered, including a power supply system based on thyristor rectifiers and a power supply system based on diode rectifiers and DC choppers. In addition, different control methods, including constant current control (CCC) and constant power control (CPC), on DC electric arc furnaces are applied. For evaluating the power quality indexes, voltage and current harmonic distortion, unbalance of voltage and current, and power factor on the AC side are investigated for different power supply systems. Simulation results were performed with PSCAD/EMTDC software. It is shown that the power supply systems with diode rectifiers and DC choppers have superiority in comparison to the types based on thyristor rectifiers. According to the results, the average current THD is reduced from 16.55% in the thyristor rectifier to 8.40% in the chopper rectifiers with the CCC method and from 19.27% in the thyristor rectifier to 7.38% in the chopper rectifiers with the CPC method. Moreover, the average voltage THD is reduced from 5.67% in the thyristor rectifier to 3.02% in the chopper rectifiers with the CCC method. The result is similar to the CPC method. Furthermore, for a specific power supply system, the harmonic distortion is lower in the case of the CPC method than in the CCC method.

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Arc Voltage Distortion as a Source of Higher Harmonics Generated by Electric Arc Furnaces

Cited by 7 publications

References 25 publications

Arc Furnace Power-Susceptibility Coefficients

Arc Furnace Power-Susceptibility Coefficients

Study and Analysis of Dynamics and Energy Efficiency of Arc Steelmaking Furnace Electrical Mode with a Fuzzy Control Algorithm

A Comprehensive Evaluation of Different Power Quantities in DC Electric Arc Furnace Power Supplies

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