Modeling of MMC for Fast and Accurate Simulation of Electromagnetic Transients: A Review

Salman Saeed Khan and Elisabetta Tedeschi
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Salman Saeed Khan: Department of Electric Power Engineering, Norwegian University of Science and Technology (NTNU), O.S. Bragstads Plass 2E, 7491 Trondheim, Norway
Elisabetta Tedeschi: Department of Electric Power Engineering, Norwegian University of Science and Technology (NTNU), O.S. Bragstads Plass 2E, 7491 Trondheim, Norway

Energies, 2017, vol. 10, issue 8, 1-32

Abstract: Over the past decade, modular multilevel converters have evolved as the preferred choice for high voltage conversion systems. The design of the converter poses a computational challenge to the classical electromagnetic transient simulation techniques, for which the existing literature proposes numerous simplified and computationally-efficient equivalent representations. Despite the extensive collection of proposed models, the literature lacks a systematic comparison of these representations, which could enable their appropriate selection based on the specific simulation objectives. In light of these requirements, this article presents a comprehensive review of MMC models and discusses their applicability for parallel and real-time simulation. Using PSCAD/EMTDC simulations, the models are objectively compared with regards to computational efficiency and accuracy for various transient conditions. In addition, the paper also presents a brief account of MMC operation and the associated control and modulation system.

Keywords: high voltage direct current; modular multilevel converters (MMC); electromagnetic transient (EMT); Thevenin’s equivalent models; switching function models; average models (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: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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