Harmonic Mitigation Using Passive Harmonic Filters: Case Study in a Steel Mill Power System

Park, Byung-Ju; Lee, Jaehyeong; Yoo, Hang-Kyu; Jang, Gilsoo

doi:10.3390/en14082278

Cited by 30 publications

(22 citation statements)

References 22 publications

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“…Despite their disadvantages (e.g., harmonics amplification, detuning phenomena, electrical grid dependency of their efficiency, the choice of the damping resistance, etc. ), PHFs are commonly used in practice because they are low cost, simple in structure, easy to maintain, highly efficient in terms of individual harmonic reduction, and have easy applicability in low voltage (LV), medium voltage (MV), and high voltage (HV) systems [5][6][7]. The PHFs are organized in different structures described in the literature [8]: the single-tuned filter [9][10][11][12][13][14][15][16], double-tuned filter [17][18][19][20][21][22][23][24][25][26][27][28], triple-tuned filter [29,30], series passive filter [31], hybrid passive filter [32,33], damped filters (first, second, third-order filter, and C-type filter) [34][35][36][37][38][39][40][41], filter group [42][43][44][45][46][47][48]…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Factors Having an Influence on the LC Passive Harmonic Filter Work Efficiency

2022

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This paper presents the electrical system factors having an influence on the work efficiency and performance of the LC passive harmonic filters (PHFs). Such filters are very often used in industries for the purpose of harmonics mitigation and reactive power compensation. Before their installation in the electrical system, many investigations should be performed in order to ensure their good design as well as work efficiency after connection. In this paper, the factors having an influence on the PHFs work efficiency and performance, such as the grid short-circuit power, primary grid voltage spectrum (voltage measured at the PCC before the filter connection), load reactive power and current characteristic harmonics, manufacturer filter parameters tolerance and filter-detuning phenomena are investigated. Most of the quoted factors are mentioned in the literature, but the novelty of this paper is that, based on the case study example of the single-tuned filter investigated in the laboratory, the influence of those factors on the filter work efficiency are demonstrated, and some solutions and recommendations are proposed. The studies are focused on the design of the single-tuned filter in the laboratory, and some simulation results are presented as well.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Factors Having an Influence on the LC Passive Harmonic Filter Work Efficiency

2022

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“…Even-order current harmonics produced by semiconverters can be reduced to some extent through the implementation of PWM, as presented in [22], or by installing some sort of filtering on the AC side, as presented in [23]. However, the problem here is the price of the technical solution, which can easily exceed the price of using different kinds of PE converters.…”

Section: Introductionmentioning

confidence: 99%

Identification of Even-Order Harmonics Injected by Semiconverter into the AC Grid

et al. 2022

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In this study, the feedback effects of a three-phase half-controlled rectifier (also known as a semiconverter) to three-phase AC power grid was analyzed. Special attention was paid to the identification of harmonic order of the phase current. As a reference point for analysis, the mathematical model of an uncontrolled rectifier was used. The harmonic order of the phase current was identified by displaying the measurement results as well as using a mathematical model that is easily applicable, although this is unusual for harmonic analysis because it is based on time domain data. For this purpose, laboratory models of uncontrolled and half-controlled rectifiers were assembled. For both converters, the results obtained by practical laboratory measurements were compared to the mathematically obtained results, with the commutation in the mathematical model being ignored. The effects of commutation were analyzed in more detail for the laboratory model. For the semiconverter, the characteristic waveforms were studied for few different firing angles of the thyristor. Additionally, total power factor and total harmonic distortion of phase current were determined for all chosen firing angles. Finally, a comprehensive conclusion was drawn based on theoretically and practically obtained results on the appearance of even-order current harmonics, which should be taken into consideration when designing input filters and which contributes to power quality of the AC power grid.

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“…The single tuned passive filter is commonly and frequently used in manufacturing industries to mitigate harmonic distortions. This type of filter is simpler and economical as compared to other filters [8].…”

Section: Introductionmentioning

confidence: 99%

Optimal Selection of Reactive Power For Single Tuned Passive Filter Based on Curve Fitting Technique

Bajwa

Keerio

Memon

et al. 2022

IJIST

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This research presents the Optimal Reactive Power (Qc) selection for a single-tuned passive filter. DC drives are very popular in the industrial zone due to their high performance, flexibility, easy control, and low cost. DC drives operate by giving supply from an AC utility and AC to DC can be converted using the AC-DC converter. But this conversion introduces harmonics in the input supply current that affect the performance of the DC drive and also cause serious problems for the overall power quality of the system. Many researchers are searching for the appropriate solutions to mitigate this cause. A passive filter is one solution to minimize or avoid harmonics from entering the electrical system. The key aspect of the passive filter design has been a difficult task. The parameters of the passive filter largely depends upon selecting the suitable value of reactive power (Qc). In this paper, the Simulink model of an AC-DC converter based on a separately excited dc motor is used as an industrial load, and a curve fitting technique has been used to select the optimal value of reactive power (Qc) for the passive filter. The simulation results and analysis show that optimal selection of reactive power for single tuned passive filter using the proposed technique is very effective by taking international standards limits for harmonic distortion.

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Harmonic Mitigation Using Passive Harmonic Filters: Case Study in a Steel Mill Power System

Cited by 30 publications

References 22 publications

Analysis of the Factors Having an Influence on the LC Passive Harmonic Filter Work Efficiency

Analysis of the Factors Having an Influence on the LC Passive Harmonic Filter Work Efficiency

Identification of Even-Order Harmonics Injected by Semiconverter into the AC Grid

Optimal Selection of Reactive Power For Single Tuned Passive Filter Based on Curve Fitting Technique

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