Design and Implementation of a Hybrid System for the Mitigation of PQ Problems of Medium-Frequency Induction Steel-Melting Furnaces

Yılmaz, İlker; Durna, Emre; Ermiş, M.

doi:10.1109/tia.2016.2530707

Cited by 16 publications

(17 citation statements)

References 33 publications

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“…IMF load of metal industry is one of the most problematic loads in power system in terms of harmonics and interharmonics [6–9]. The frequencies of harmonic components change both in frequency and magnitude during the metal melting process as given in Fig.…”

Section: Problem Definitionmentioning

confidence: 99%

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Suppression factor as evaluation criterion for wide‐frequency filtering equipment

Durna

Ermiş

2019

J. eng.

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Section: Problem Definitionmentioning

confidence: 99%

“…The harmonics and interharmonics of the IMF load under investigation has been filtered out in the field using two different control methods namely proportional control [7] and hysteresis current control [8]. In the following sections, definition of SF is mentioned in detail.…”

Section: Problem Definitionmentioning

confidence: 99%

Suppression factor as evaluation criterion for wide‐frequency filtering equipment

Durna

Ermiş

2019

J. eng.

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“…The use of active filters has been suggested and a method extracting each harmonic and interharmonic current reference with 5 Hz resolution has been proposed in [6,7] by using multiple synchronous reference frame (MSRF) technique. Active power filters (APF) have been a hot research topic for nearly three decades due to their superiorities to passive harmonic filters [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. There are various APF types, summarized in [10], and they are classified with respect to their circuit topology and application area.…”

Section: Problem Definitionmentioning

confidence: 99%

“…While [11,12] utilize series APFs, shunt APF systems are proposed in [13][14][15][16][17][18][19][20] in order to mitigate unwanted voltage and current harmonics, respectively. APF can also be used together with passive filters as hybrid active power filters (HAPF) [24][25][26]. APFs can be used to improve the power quality in various applications such as metal industry [24,25], distribution systems [26], micro grids [27], motor drives [28], and other industrial loads.…”

Section: Introductionmentioning

confidence: 99%

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Suppression of the Second Harmonic Subgroup Injected by an AC EAF: Design Considerations and Performance Estimation of a Shunt APF

et al. 2018

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This paper proposes a design methodology for an active power filter (APF) system to suppress the second harmonic subgroup injected by an AC electric arc furnace (EAF) to the utility grid. The APF system is composed of identical parallel units connected to the utility grid via a specially-designed coupling transformer. Each APF converter is a three-phase three-wire two-level voltage source converter (VSC). The number of parallel APF units, coupling transformer MVA rating, and turns ratio are optimized in the view of the ratings of commercially-available high voltage (HV) IGBTs. In this research work, line current waveforms sampled at 25.6-kS/s on the medium voltage (MV) side of a 65-MVA EAF transformer are then used to extract the second harmonic subgroup, 95-, 100-, and 105-Hz current components, by multiple synchronous reference frame (MSRF) analysis, which was previously proposed to decompose EAF current interharmonics and harmonics in real-time. By summing up this digital data of the second harmonic subgroup, the reference current signal for the APF system is produced in real-time. A detailed model of the APF system is then run on EMTDC/PSCAD to follow the produced reference current signal according to hysteresis band control philosophy. The simulation results show that the proposed APF system can successfully suppress the second harmonic subgroup of an AC EAF.

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Active impedance‐based single‐phase hybrid active power filter

Lemma

Liao

2019

IEEJ Transactions Elec Engng

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This article presents a single‐phase hybrid active power filter (1pSHAPF) containing a small rated active power filter connected in series with a single‐tuned inductive‐capacitive (LC) passive filter. Single‐phase nonlinear loads are increasing alarmingly in the distribution system. This is because the devices are gaining attraction for applications in information technology, emerging electric vehicle technology, and interfacing for power grids. However, nonlinear loads are common source of harmonics and contribute unpleasant conditions for the power systems. In the proposed control, a single‐phase hybrid active power filter was actively adjusted to form multiple active short circuits for characteristic harmonic. Load harmonic current easily diverted into filter path and harmonic voltages eliminated from the bus due to the active short circuit formed at the bus. The LC passive filter blocked 70% of the maximum fundamental bus voltage. This allows us to use lower DC‐link voltage hence reduces switching loss and investment for inverters. The detailed design procedures and their realization on TMS320F28335 DSP are analyzed and presented using PSIM and MATLAB/Simulink environments. The performances of the proposed controller are evaluated using diode rectifiers with resistance‐capacitance (RC) and resistance‐inductance (RL) loads. The results showed good harmonic voltage damping, current harmonic reduction (from 60.86 to 9.4%), and power factor correction. Therefore, the proposed controller can be taken as a solution to extend the hybrid active power filter (HAPF) tuned into multiple harmonic frequencies. This research has a practical benefit for power quality (PQ) compensation in the case of a single‐phase smart grid. © 2019 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Design and Implementation of a Hybrid System for the Mitigation of PQ Problems of Medium-Frequency Induction Steel-Melting Furnaces

Cited by 16 publications

References 33 publications

Suppression factor as evaluation criterion for wide‐frequency filtering equipment

Suppression factor as evaluation criterion for wide‐frequency filtering equipment

Suppression of the Second Harmonic Subgroup Injected by an AC EAF: Design Considerations and Performance Estimation of a Shunt APF

Active impedance‐based single‐phase hybrid active power filter

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