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Design and Simulation of a Novel Modular Converter-Transformer for AC/DC, DC/AC and DC/DC Operations

Author

Listed:
  • Francesco Castelli Dezza

    (Mechanical Department, Politecnico di Milano, 20156 Milan, Italy)

  • Nicola Toscani

    (Mechanical Department, Politecnico di Milano, 20156 Milan, Italy)

  • Matteo Benvenuti

    (Mechanical Department, Politecnico di Milano, 20156 Milan, Italy)

  • Riccardo Tagliaretti

    (ePEBB s , 20122 Milan, Italy)

  • Vincenzo Agnetta

    (Terna, 00156 Rome, Italy)

  • Mattia Amatruda

    (Terna, 00156 Rome, Italy)

  • Samuel De Maria

    (Terna, 00156 Rome, Italy)

Abstract

This manuscript describes the research and the development of a novel family of modular AC/DC, DC/AC and DC/DC converters for high-voltage interconnections between AC and DC lines or between two DC lines. Such devices are bidirectional and they integrate a three-phase power transformer. The relationship existing between AC and DC voltages in each module for rectifier and inverter operations is analogous to the one set in single-phase thyristor bridges. Due to the novelty of this topic, a low-voltage, low-power prototype was sized to make a first validation of its predicted behavior. This converter should realize all the operating modes allowed by the new family of devices, namely, AC/DC, DC/AC and DC/DC conversions. Its rated phase voltage is 230 V rms and it should be able to carry at least 1 kW. Thus, a switching model of the device was realized first. The simulated behavior of this prototype is deeply discussed in this paper during steady-state, transient and DC-fault operations.

Suggested Citation

  • Francesco Castelli Dezza & Nicola Toscani & Matteo Benvenuti & Riccardo Tagliaretti & Vincenzo Agnetta & Mattia Amatruda & Samuel De Maria, 2024. "Design and Simulation of a Novel Modular Converter-Transformer for AC/DC, DC/AC and DC/DC Operations," Energies, MDPI, vol. 17(23), pages 1-36, November.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:23:p:6014-:d:1532924
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