Suppression of Time-Varying Interharmonics Produced by Medium-Frequency Induction Melting Furnaces by a HAPF System

Durna, Emre; Yılmaz, İlker; Ermiş, M.

doi:10.1109/tpel.2016.2542140

Cited by 24 publications

(32 citation statements)

References 39 publications

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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%

“…The most basic and effective waveform modulation technique for generating a current reference with a voltage source converter is to use hysteresis band modulation philosophy [38][39][40][41][42][43][44]. The hysteresis band modulation technique has been widely used in the literature for APF systems [25,43,44] due to its advantages, like easy implementation, dynamic stability, controllability on current, and perfect tracking of the reference signal [25,44]. However, it has also some drawbacks like high and varying switching frequency, thus high switching losses [25,44].…”

Section: Proposed Control Strategymentioning

confidence: 99%

“…The hysteresis band modulation technique has been widely used in the literature for APF systems [25,43,44] due to its advantages, like easy implementation, dynamic stability, controllability on current, and perfect tracking of the reference signal [25,44]. However, it has also some drawbacks like high and varying switching frequency, thus high switching losses [25,44]. The use of the hysteresis band modulation technique is suggested for this particular application due to its superiority for current reference tracking with a voltage source converter topology.…”

Section: Proposed Control Strategymentioning

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%

“…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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Section: Problem Definitionmentioning

confidence: 99%

Section: Proposed Control Strategymentioning

confidence: 99%

Section: Proposed Control Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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Selective Compensation of Distortion, Unbalanced and Reactive Power of a Thyristor Controlled LC-Coupling Hybrid Active Power Filter (TCLC-HAPF)

2018

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Large-scale unit commitment under uncertainty: an updated literature survey

Ackooij¹,

et al. 2018

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The Unit Commitment problem in energy management aims at finding the optimal production schedule of a set of generation units, while meeting various system-wide constraints. It has always been a large-scale, non-convex, difficult problem, especially in view of the fact that, due to operational requirements, it has to be solved in an unreasonably small time for its size. Recently, growing renewable energy shares have strongly increased the level of uncertainty in the system, making the (ideal) Unit Commitment model a large-scale, non-convex and uncertain (stochastic, robust, chanceconstrained) program. We provide a survey of the literature on methods for the Uncertain Unit Commitment problem, in all its variants. We start with a review of the main contributions on solution methods for the deterministic versions of the problem, focussing on those based on mathematical programming techniques that are more relevant for the uncertain versions of the problem. We then present and categorize the approaches to the latter, while providing entry points to the relevant literature on optimization under uncertainty. This is an updated version of the paper "Large-scale Unit Commitment under uncertainty: a literature survey" that appeared in 4OR 13(2), 115-171 (2015); this version has over 170 more citations, most of which appeared in the last three years, proving how fast the literature on uncertain Unit Commitment evolves, and therefore the interest in this subject.

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Suppression of Time-Varying Interharmonics Produced by Medium-Frequency Induction Melting Furnaces by a HAPF System

Cited by 24 publications

References 39 publications

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

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

Selective Compensation of Distortion, Unbalanced and Reactive Power of a Thyristor Controlled LC-Coupling Hybrid Active Power Filter (TCLC-HAPF)

Large-scale unit commitment under uncertainty: an updated literature survey

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