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Modeling and Enhanced Control of Hybrid Full Bridge–Half Bridge MMCs for HVDC Grid Studies

Author

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  • Ricardo Vidal-Albalate

    (Department of Industrial Systems Engineering and Design, Universitat Jaume I, 12071 Castelló de la Plana, Spain)

  • Jaume Forner

    (Department of Industrial Systems Engineering and Design, Universitat Jaume I, 12071 Castelló de la Plana, Spain)

Abstract

Modular multilevel converters (MMCs) are expected to play an important role in future high voltage direct current (HVDC) grids. Moreover, advanced MMC topologies may include various submodule (SM) types. In this sense, the modeling of MMCs is paramount for HVDC grid studies. Detailed models of MMCs are cumbersome for electromagnetic transient (EMT) programs due to the high number of components and large simulation times. For this reason, simplified models that reduce the computation times while reproducing the dynamics of the MMCs are needed. However, up to now, the models already developed do not consider hybrid MMCs, which consist of different types of SMs. In this paper, a procedure to simulate MMCs having different SM topologies is proposed. First, the structure of hybrid MMCs and the modeling method is presented. Next, an enhanced procedure to compute the number of SMs to be inserted that takes into account the different behavior of full-bridge SMs (FB-SMs) and half-bridge submodules (HB-SMs) is proposed in order to improve the steady-state and dynamic response of hybrid MMCs. Finally, the MMC model and its control are validated by means of detailed PSCAD simulations for both steady-state and transients conditions (AC and DC faults).

Suggested Citation

  • Ricardo Vidal-Albalate & Jaume Forner, 2020. "Modeling and Enhanced Control of Hybrid Full Bridge–Half Bridge MMCs for HVDC Grid Studies," Energies, MDPI, vol. 13(1), pages 1-26, January.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:1:p:180-:d:303968
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    References listed on IDEAS

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    1. Salman Saeed Khan & Elisabetta Tedeschi, 2017. "Modeling of MMC for Fast and Accurate Simulation of Electromagnetic Transients: A Review," Energies, MDPI, vol. 10(8), pages 1-32, August.
    2. Tormo, Daniel & Idkhajine, Lahoucine & Monmasson, Eric & Vidal-Albalate, Ricardo & Blasco-Gimenez, Ramon, 2019. "Embedded real-time simulators for electromechanical and power electronic systems using system-on-chip devices," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 158(C), pages 326-343.
    3. Vidal-Albalate, R. & Belenguer, E. & Beltran, H. & Blasco-Gimenez, R., 2016. "Efficient model for modular multi-level converter simulation," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 130(C), pages 167-180.
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    Cited by:

    1. Saman Dadjo Tavakoli & Eduardo Prieto-Araujo & Enric Sánchez-Sánchez & Oriol Gomis-Bellmunt, 2020. "Interaction Assessment and Stability Analysis of the MMC-Based VSC-HVDC Link," Energies, MDPI, vol. 13(8), pages 1-19, April.
    2. Yuqi Pang & Gang Ma & Xunyu Liu & Xiaotian Xu & Xinyuan Zhang, 2021. "A New MMC Sub-Module Topology with DC Fault Blocking Capability and Capacitor Voltage Self-Balancing Capability," Energies, MDPI, vol. 14(12), pages 1-17, June.

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