Optimized Integrated Harmonic Filter Inductor for Dual-Converter-Fed Open-End Transformer Topology

Ghanshyamsinh Vijaysinh Gohil, Lorand Bede, Remus Teodorescu, Tamas Kerekes, Frede Blaabjerg

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

16 Citationer (Scopus)
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Resumé

Many high power converter systems are often connected to the medium voltage network using a step-up transformer. In such systems, the converter-side windings of the transformer can be configured as an open-end and multi-level voltage waveforms can be achieved by feeding these open-end windings from both ends using the two-level dual-converter. An $LCL$ filter with separate converter-side inductors for each of the converter is commonly used to attenuate the undesirable harmonic frequency components in the grid current. The magnetic integration of the converter-side inductors is presented in this paper, where the flux in the common part of the magnetic core is completely canceled out. As a result, the size of the magnetic component can be significantly reduced. A multi-objective design optimization is presented, where the energy loss and the volume are optimized. The optimization process takes into account the yearly load profile and the energy loss is minimized, rather than minimizing the losses at a specific operating point. The size reduction achieved by the proposed inductor is demonstrated through a comparative evaluation. Finally, the analysis is supported through simulations and experimental results.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Power Electronics
Vol/bind32
Udgave nummer3
Sider (fra-til)1818 - 1831
Antal sider14
ISSN0885-8993
DOI
StatusUdgivet - mar. 2017

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Energy dissipation
Topology
Magnetic cores
Electric potential
Power converters
Fluxes
Design optimization

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    title = "Optimized Integrated Harmonic Filter Inductor for Dual-Converter-Fed Open-End Transformer Topology",
    abstract = "Many high power converter systems are often connected to the medium voltage network using a step-up transformer. In such systems, the converter-side windings of the transformer can be configured as an open-end and multi-level voltage waveforms can be achieved by feeding these open-end windings from both ends using the two-level dual-converter. An $LCL$ filter with separate converter-side inductors for each of the converter is commonly used to attenuate the undesirable harmonic frequency components in the grid current. The magnetic integration of the converter-side inductors is presented in this paper, where the flux in the common part of the magnetic core is completely canceled out. As a result, the size of the magnetic component can be significantly reduced. A multi-objective design optimization is presented, where the energy loss and the volume are optimized. The optimization process takes into account the yearly load profile and the energy loss is minimized, rather than minimizing the losses at a specific operating point. The size reduction achieved by the proposed inductor is demonstrated through a comparative evaluation. Finally, the analysis is supported through simulations and experimental results.",
    keywords = "Wind turbine, Wind energy systems, Wind energy conversion system, Harmonic filter design, Harmonic filter, LCL filter, Multi-objective optimization, Optimized filter design, High power converters, Dual-converter, Open-end transformer, Open-end, Water cooled inductor, Liquid cooling",
    author = "Gohil, {Ghanshyamsinh Vijaysinh} and Lorand Bede and Remus Teodorescu and Tamas Kerekes and Frede Blaabjerg",
    year = "2017",
    month = "3",
    doi = "10.1109/TPEL.2016.2562679",
    language = "English",
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    pages = "1818 -- 1831",
    journal = "I E E E Transactions on Power Electronics",
    issn = "0885-8993",
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    Optimized Integrated Harmonic Filter Inductor for Dual-Converter-Fed Open-End Transformer Topology. / Gohil, Ghanshyamsinh Vijaysinh; Bede, Lorand; Teodorescu, Remus; Kerekes, Tamas; Blaabjerg, Frede.

    I: I E E E Transactions on Power Electronics, Bind 32, Nr. 3, 03.2017, s. 1818 - 1831.

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

    TY - JOUR

    T1 - Optimized Integrated Harmonic Filter Inductor for Dual-Converter-Fed Open-End Transformer Topology

    AU - Gohil, Ghanshyamsinh Vijaysinh

    AU - Bede, Lorand

    AU - Teodorescu, Remus

    AU - Kerekes, Tamas

    AU - Blaabjerg, Frede

    PY - 2017/3

    Y1 - 2017/3

    N2 - Many high power converter systems are often connected to the medium voltage network using a step-up transformer. In such systems, the converter-side windings of the transformer can be configured as an open-end and multi-level voltage waveforms can be achieved by feeding these open-end windings from both ends using the two-level dual-converter. An $LCL$ filter with separate converter-side inductors for each of the converter is commonly used to attenuate the undesirable harmonic frequency components in the grid current. The magnetic integration of the converter-side inductors is presented in this paper, where the flux in the common part of the magnetic core is completely canceled out. As a result, the size of the magnetic component can be significantly reduced. A multi-objective design optimization is presented, where the energy loss and the volume are optimized. The optimization process takes into account the yearly load profile and the energy loss is minimized, rather than minimizing the losses at a specific operating point. The size reduction achieved by the proposed inductor is demonstrated through a comparative evaluation. Finally, the analysis is supported through simulations and experimental results.

    AB - Many high power converter systems are often connected to the medium voltage network using a step-up transformer. In such systems, the converter-side windings of the transformer can be configured as an open-end and multi-level voltage waveforms can be achieved by feeding these open-end windings from both ends using the two-level dual-converter. An $LCL$ filter with separate converter-side inductors for each of the converter is commonly used to attenuate the undesirable harmonic frequency components in the grid current. The magnetic integration of the converter-side inductors is presented in this paper, where the flux in the common part of the magnetic core is completely canceled out. As a result, the size of the magnetic component can be significantly reduced. A multi-objective design optimization is presented, where the energy loss and the volume are optimized. The optimization process takes into account the yearly load profile and the energy loss is minimized, rather than minimizing the losses at a specific operating point. The size reduction achieved by the proposed inductor is demonstrated through a comparative evaluation. Finally, the analysis is supported through simulations and experimental results.

    KW - Wind turbine

    KW - Wind energy systems

    KW - Wind energy conversion system

    KW - Harmonic filter design

    KW - Harmonic filter

    KW - LCL filter

    KW - Multi-objective optimization

    KW - Optimized filter design

    KW - High power converters

    KW - Dual-converter

    KW - Open-end transformer

    KW - Open-end

    KW - Water cooled inductor

    KW - Liquid cooling

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    DO - 10.1109/TPEL.2016.2562679

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    JO - I E E E Transactions on Power Electronics

    JF - I E E E Transactions on Power Electronics

    SN - 0885-8993

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    ER -