Initialization of Modular Multilevel Converter Models for the Simulation of Electromagnetic Transients

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Date

2019-02-01

Author

Stepanov, Anton
Saad, Hani
Karaağaç, Ulaş
Mahseredjian, Jean

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This paper presents an accurate steady-state initialization method for electromagnetic transient (EMT) models of modular multilevel converters (MMCs). The proposed method uses steady-state arm voltages and currents to initialize internal electrical variables and control systems of the converter, including capacitor voltage and gating signals of each sub-module. In addition to typical voltage source converter upper level control, MMC specific controls are also considered, including circulating current control, dc ripple control, and capacitor voltage balancing algorithm. EMT simulations on 101-level and 401-level MMC-HVDC systems confirm the accuracy of the proposed method.

URI

https://hdl.handle.net/11511/114917

Journal

IEEE TRANSACTIONS ON POWER DELIVERY

DOI

https://doi.org/10.1109/tpwrd.2018.2872883

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Department of Electrical and Electronics Engineering, Article

Citation Formats

A. Stepanov, H. Saad, U. Karaağaç, and J. Mahseredjian, “Initialization of Modular Multilevel Converter Models for the Simulation of Electromagnetic Transients,” IEEE TRANSACTIONS ON POWER DELIVERY, vol. 34, no. 1, pp. 290–300, 2019, Accessed: 00, 2025. [Online]. Available: https://hdl.handle.net/11511/114917.