Interaction Assessment and Stability Analysis of the MMC-Based VSC-HVDC Link
CITCEA-UPC, Department of Electrical Engineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain
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Energies 2020, 13(8), 2075; https://doi.org/10.3390/en13082075
Received: 28 February 2020 / Revised: 8 April 2020 / Accepted: 17 April 2020 / Published: 21 April 2020
(This article belongs to the Special Issue Electrical Design, Operation and Control of Onshore and Offshore Wind Power Plants
)
This paper investigates the dynamic behavior of a modular multi-level converter (MMC)-based HVDC link. An overall state-space model is developed to identify the system critical modes, considering the dynamics of the master MMC and slave MMC, their control systems, and the HVDC cable. Complementary to the state-space model, an impedance-based model is also derived to obtain the minimum phase margin (PM) of the system. In addition, a relative gain array (RGA) analysis is conducted to quantify the level of interactions among the control systems of master and slave MMCs and their impacts on stability. Finally, with the help of the results obtained from the system analysis (eigenvalue, phase margin, sensitivity, and RGA), the system dynamic performance is improved.
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Keywords:
HVDC; MMC; mutual interactions; small-signal analysis; state-space model
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MDPI and ACS Style
Dadjo Tavakoli, S.; Prieto-Araujo, E.; Sánchez-Sánchez, E.; Gomis-Bellmunt, O. Interaction Assessment and Stability Analysis of the MMC-Based VSC-HVDC Link. Energies 2020, 13, 2075. https://doi.org/10.3390/en13082075
AMA Style
Dadjo Tavakoli S, Prieto-Araujo E, Sánchez-Sánchez E, Gomis-Bellmunt O. Interaction Assessment and Stability Analysis of the MMC-Based VSC-HVDC Link. Energies. 2020; 13(8):2075. https://doi.org/10.3390/en13082075
Chicago/Turabian StyleDadjo Tavakoli, Saman; Prieto-Araujo, Eduardo; Sánchez-Sánchez, Enric; Gomis-Bellmunt, Oriol. 2020. "Interaction Assessment and Stability Analysis of the MMC-Based VSC-HVDC Link" Energies 13, no. 8: 2075. https://doi.org/10.3390/en13082075
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