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Design and Implementation of a Hybrid System for the Mitigation of PQ Problems of Medium-Frequency Induction Steel-Melting Furnaces
Date
2016-05-01
Author
Yilmaz, Ilker
Durna, Emre
Ermiş, Muammer
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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This paper describes a hybrid system for the mitigation of power quality (PQ) problems of medium-frequency coreless induction steel-melting furnaces. The hybrid system is composed of passive shunt-detuned filters and a hybrid active power filter (HAPF). Since the single-phase load-resonant thyristor inverter of the work coil operates at variable frequency and supplied from a multipulse thyristor rectifier, interharmonic current components, due to cross-modulation phenomenon across ac-dc-ac link, appear in supply lines. The frequencies of these interharmonics are migrating in time over a wide range, and they interact with passive shunt LC filters and other power-system components resulting in harmful effects on the overall system. Reactive power compensation of medium-frequency coreless induction steel-melting furnace is achieved by passive shunt-detuned filter banks, thus avoiding the amplification risk of interharmonic current components. Interharmonics are satisfactorily suppressed by a HAPF with K control strategy. The performance of controller is improved by modifying the conventional K control strategy and adding feedforward control loops for dominant characteristic harmonics. The resulting hybrid system is operating in a steel-melt shop successfully since March 2013.
Subject Keywords
Cross Modulation
,
Hybrid Active Power Filter (HAPF)
,
Induction Melting Furnace (IMF)
,
Interharmonics
,
Power Quality (PQ)
URI
https://hdl.handle.net/11511/32687
Journal
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
DOI
https://doi.org/10.1109/tia.2016.2530707
Collections
Graduate School of Natural and Applied Sciences, Article
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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, Muammer (2015-10-18)
This paper describes a hybrid system for the mitigation of Power Quality (PQ) problems of medium-frequency coreless induction steel melting furnaces. The hybrid system is composed of passive shunt detuned filters and a Hybrid Active Power Filter (HAPF). Since the single-phase load-resonant thyristor inverter of the work coil operates at variable frequency and supplied from a multi-pulse thyristor rectifier, interharmonic current components, due to cross-modulation phenomenon across ac-dc-ac link, appear in ...
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This paper describes the design and field implementation of a hybrid active power filter (HAPF) system to suppress time-varying interharmonics injected into the grid by medium-frequency coreless induction melting furnaces (IMFs). In a sample steel melt shop, variable-frequency load-resonant inverters of works coils are supplied from the medium-voltage grid via 12- and 24-pulse thyristor rectifiers. The cross-modulation phenomenon in ac-dc-ac link of the medium-frequency coreless IMF installations produces i...
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I. Yilmaz, E. Durna, and M. Ermiş, “Design and Implementation of a Hybrid System for the Mitigation of PQ Problems of Medium-Frequency Induction Steel-Melting Furnaces,”
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
, pp. 2700–2713, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32687.