Interaction Assessment and Stability Analysis of the MMC-Based VSC-HVDC Link

Saman Dadjo Tavakoli, Eduardo Prieto-Araujo, Enric Sánchez-Sánchez and Oriol Gomis-Bellmunt
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Saman Dadjo Tavakoli: CITCEA-UPC, Department of Electrical Engineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain
Eduardo Prieto-Araujo: CITCEA-UPC, Department of Electrical Engineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain
Enric Sánchez-Sánchez: CITCEA-UPC, Department of Electrical Engineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain
Oriol Gomis-Bellmunt: CITCEA-UPC, Department of Electrical Engineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain

Energies, 2020, vol. 13, issue 8, 1-19

Abstract: 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.

Keywords: HVDC; MMC; mutual interactions; small-signal analysis; state-space model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:8:p:2075-:d:348397

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