Sequence Impedance Modeling of Modular Multilevel Converters

Sun, Jian; Liu, Hanchao

doi:10.1109/jestpe.2017.2762408

Cited by 232 publications

(140 citation statements)

References 26 publications

Supporting

Mentioning

125

Contrasting

Order By: Relevance

“…The frequency shift terms in (24) are approximated to ideal cosine waves at steady-state frequencies, in phase with e and v r , respectively. The division by v Σ Cu in (26) is linearized as…”

Section: ) Steady-state Componentsmentioning

confidence: 99%

Control and Admittance Modeling of an AC/AC Modular Multilevel Converter for Railway Supplies

Bessegato

Ilves

Harnefors

et al. 2020

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

Control and Admittance Modeling of an AC/AC Modular Multilevel Converter for Railway Supplies IEEE transactions on power electronicsAccess to the published version may require subscription. N.B. When citing this work, cite the original published paper. Permanent link to this version:Abstract-Modular multilevel converters (MMCs) can be configured to perform ac/ac conversion, which makes them suitable as railway power supplies. In this paper, a hierarchical control scheme for ac/ac MMCs for railway power supplies is devised and evaluated, considering the requirements and the operating conditions specific to this application. Furthermore, admittance models of the ac/ac MMC are developed, showing how the suggested hierarchical control scheme affects the three-phase and the single-phase side admittances of the converter. These models allow for analyzing the stability of the interconnected system using the impedance-based stability criterion and the passivitybased stability assessment. Finally, the findings presented in this paper are validated experimentally, using a down-scaled MMC.

show abstract

Section: ) Steady-state Componentsmentioning

confidence: 99%

Control and Admittance Modeling of an AC/AC Modular Multilevel Converter for Railway Supplies

Bessegato

Ilves

Harnefors

et al. 2020

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

show abstract

“…Impedance model, which is derived using various methods in the literature, is required for stability analysis of MMC based application …”

Section: Circuit Topology and Modellingmentioning

confidence: 99%

“…Impedance model, which is derived using various methods in the literature, is required for stability analysis of MMC based application. [69][70][71][72][73] Lyu et al 74 investigate the stability analysis of MMC-based HVDC with wind farm integration in frequency domain. In this review paper, impedance model is derived only for compensated modulation case as expressed in Lyu et al 74 Thereby, the impedance model of direct modulation case with/without circulating current control will not be repeated in this paper.…”

Section: Impedance Modelmentioning

confidence: 99%

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Kurtoğlu

Eroğlu

Arslan

et al. 2018

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary The modular multilevel converters (MMCs) are frequently preferred for medium and high power energy conversion systems thanks to their modular structure and high quality output waveform. The remarkable studies related to the MMC have been carried out in recent years, which are mainly focused on its topology, control, or application. In this paper, MMC circuit topologies consisting of traditional submodule cells and new proposed configurations are introduced, and their control process, modulation techniques, and application areas are discussed in order to provide the readers the current state of the art of MMC technology. A wide part of this article is devoted to demonstrate the recent contributions arising in MMC studies. In this context, this paper not only outlines the circuit topology, control objectives, and applications of the MMC but also presents a comprehensive review, principally in terms of the latest developments of it. Ultimately, detailed proposals and new possible topics are provided to drive future expectations of MMC technology.

show abstract

“…A method to overcome these challenges can be to model the MMC's impedance by measuring the frequency response of a physical converter test bench. However, test benches have been used for validation of analytical models only [2], [3]. They operate on lower power and voltage ratings compared to HVDC converters, and the effect of scaling down the ratings is neglected.…”

Section: Introductionmentioning

confidence: 99%