A comparative survey of power converter topologies for full-size converter operation of medium-voltage hydropower generators

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Abstract

This paper discusses the challenges for today’s power converter topologies when operating large synchronous motor-generators in pumped storage power plants, which is a medium-voltage high-power application. First, the available ratings and characteristics of the utilized power semiconductor switches are analyzed. Then, the practical limitations of classical multilevel voltage source converters are reviewed, particularly the individual maximum achievable operating voltage. Next, the usability of direct AC–AC converters is discussed. Due to their arbitrary scalability and excellent performance, modular multilevel converter topologies gain special attention in this paper. The characteristics of the two main arrangements, the modular multilevel converter and the modular multilevel matrix converter, are examined with respect to the torque-speed characteristic of the installed reversible-speed pump-turbines. A review of commercially available power converters for medium-voltage high-power drive applications and their specifications as well as the identification of promising power converter topologies for operation in large pumped storage power plants complete this comprehensive analysis.
Translated title of the contributionUmrichtertopologien für den Betrieb von umrichtergespeisten Mittelspannungswasserkraftgeneratoren
Original languageEnglish
Pages (from-to)263–270
Journale&i - Elektrotechnik und Informationstechnik
Volume136
Issue number6
DOIs
Publication statusPublished - Oct 2019

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Power converters
Pumped storage power plants
Topology
Electric potential
Semiconductor switches
Turbine pumps
Synchronous motors
Scalability
Torque
Specifications

Keywords

    Fields of Expertise

    • Sustainable Systems

    Cite this

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    title = "A comparative survey of power converter topologies for full-size converter operation of medium-voltage hydropower generators",
    abstract = "This paper discusses the challenges for today’s power converter topologies when operating large synchronous motor-generators in pumped storage power plants, which is a medium-voltage high-power application. First, the available ratings and characteristics of the utilized power semiconductor switches are analyzed. Then, the practical limitations of classical multilevel voltage source converters are reviewed, particularly the individual maximum achievable operating voltage. Next, the usability of direct AC–AC converters is discussed. Due to their arbitrary scalability and excellent performance, modular multilevel converter topologies gain special attention in this paper. The characteristics of the two main arrangements, the modular multilevel converter and the modular multilevel matrix converter, are examined with respect to the torque-speed characteristic of the installed reversible-speed pump-turbines. A review of commercially available power converters for medium-voltage high-power drive applications and their specifications as well as the identification of promising power converter topologies for operation in large pumped storage power plants complete this comprehensive analysis.",
    keywords = "Wasserkraft, Energieerzeugung, Energieumwandlung, drehzahlvariabler Betrieb, Spannungszwischenkreisumrichter, Modular Multilevel Converter, Modular Multilevel Matrix Converter",
    author = "Thomas Holzer and Annette Muetze",
    year = "2019",
    month = "10",
    doi = "10.1007/s00502-019-00731-6",
    language = "English",
    volume = "136",
    pages = "263–270",
    journal = "e&i - Elektrotechnik und Informationstechnik",
    issn = "0932-383X",
    publisher = "Springer Wien",
    number = "6",

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    TY - JOUR

    T1 - A comparative survey of power converter topologies for full-size converter operation of medium-voltage hydropower generators

    AU - Holzer, Thomas

    AU - Muetze, Annette

    PY - 2019/10

    Y1 - 2019/10

    N2 - This paper discusses the challenges for today’s power converter topologies when operating large synchronous motor-generators in pumped storage power plants, which is a medium-voltage high-power application. First, the available ratings and characteristics of the utilized power semiconductor switches are analyzed. Then, the practical limitations of classical multilevel voltage source converters are reviewed, particularly the individual maximum achievable operating voltage. Next, the usability of direct AC–AC converters is discussed. Due to their arbitrary scalability and excellent performance, modular multilevel converter topologies gain special attention in this paper. The characteristics of the two main arrangements, the modular multilevel converter and the modular multilevel matrix converter, are examined with respect to the torque-speed characteristic of the installed reversible-speed pump-turbines. A review of commercially available power converters for medium-voltage high-power drive applications and their specifications as well as the identification of promising power converter topologies for operation in large pumped storage power plants complete this comprehensive analysis.

    AB - This paper discusses the challenges for today’s power converter topologies when operating large synchronous motor-generators in pumped storage power plants, which is a medium-voltage high-power application. First, the available ratings and characteristics of the utilized power semiconductor switches are analyzed. Then, the practical limitations of classical multilevel voltage source converters are reviewed, particularly the individual maximum achievable operating voltage. Next, the usability of direct AC–AC converters is discussed. Due to their arbitrary scalability and excellent performance, modular multilevel converter topologies gain special attention in this paper. The characteristics of the two main arrangements, the modular multilevel converter and the modular multilevel matrix converter, are examined with respect to the torque-speed characteristic of the installed reversible-speed pump-turbines. A review of commercially available power converters for medium-voltage high-power drive applications and their specifications as well as the identification of promising power converter topologies for operation in large pumped storage power plants complete this comprehensive analysis.

    KW - Wasserkraft

    KW - Energieerzeugung

    KW - Energieumwandlung

    KW - drehzahlvariabler Betrieb

    KW - Spannungszwischenkreisumrichter

    KW - Modular Multilevel Converter

    KW - Modular Multilevel Matrix Converter

    U2 - 10.1007/s00502-019-00731-6

    DO - 10.1007/s00502-019-00731-6

    M3 - Article

    VL - 136

    SP - 263

    EP - 270

    JO - e&i - Elektrotechnik und Informationstechnik

    JF - e&i - Elektrotechnik und Informationstechnik

    SN - 0932-383X

    IS - 6

    ER -