A new matrix converter‐based feeding system for DC electric arc furnaces and a comprehensive comparison between different types of feeding topologies

Kolagar, Arash Dehestani; Arjanaki, Ali Abdollahi; Pahlavani, Mohammad Reza Alizadeh

doi:10.1002/2050-7038.12280

Cited by 1 publication

(1 citation statement)

References 21 publications

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“…The first category includes power sources based on thyristor rectifiers, and the second category includes power sources based on diode rectifiers with DC-DC converters. According to the literature, some of the challenges that DC electric arc furnaces face include voltage and current harmonic distortion, voltage unbalance, load fluctuation, voltage flicker in the point of common coupling (PCC), and reactive power consumption [2,3]. So far, many articles have concentrated on solving the mentioned issues.…”

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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Section: Introductionmentioning

confidence: 99%