Modular Multilevel Series/Parallel Converter for Bipolar DC Distribution and Transmission

Ricardo Lizana F.; Sebastian Rivera; Zhongxi Li; Apparao Dekka; Luis Rosenthal; Hans Bahamonde I.; Angel V. Peterchev; Stefan M. Goetz

doi:10.1109/JESTPE.2020.2998738

Modular Multilevel Series/Parallel Converter for Bipolar DC Distribution and Transmission

Ricardo Lizana F., Sebastian Rivera^*, Zhongxi Li, Apparao Dekka, Luis Rosenthal, Hans Bahamonde I., Angel V. Peterchev, Stefan M. Goetz

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

10 Citations (Scopus)

Abstract

This article proposes a novel bipolar-type dc system suitable for both distribution and transmission systems based on modular multilevel series/parallel converters (MMSPCs). The system features decoupled operations of each pole of the bipolar system, being able to operate in both asymmetrical and regenerative modes. This enables two independent dc systems by using a single grid-tied converter. The MMSPC is based on a three-switch cell configuration and enables a simple balancing mechanism in combination with a wide range of output voltage frequencies. The simple balancing mechanism is the key to enable the dc operation and lead to simpler scalability for different voltage levels. Theoretical studies and experimental results are provided to verify and characterize the proposed system.

Original language	English
Article number	9103569
Pages (from-to)	1765-1779
Number of pages	15
Journal	IEEE Journal of Emerging and Selected Topics in Power Electronics
Volume	9
Issue number	2
DOIs	https://doi.org/10.1109/JESTPE.2020.2998738
Publication status	Published - Apr 2021
Externally published	Yes

Keywords

Dc bipolar systems
dc distribution
dc transmission
multilevel converter

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10.1109/JESTPE.2020.2998738

Cite this

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title = "Modular Multilevel Series/Parallel Converter for Bipolar DC Distribution and Transmission",

abstract = "This article proposes a novel bipolar-type dc system suitable for both distribution and transmission systems based on modular multilevel series/parallel converters (MMSPCs). The system features decoupled operations of each pole of the bipolar system, being able to operate in both asymmetrical and regenerative modes. This enables two independent dc systems by using a single grid-tied converter. The MMSPC is based on a three-switch cell configuration and enables a simple balancing mechanism in combination with a wide range of output voltage frequencies. The simple balancing mechanism is the key to enable the dc operation and lead to simpler scalability for different voltage levels. Theoretical studies and experimental results are provided to verify and characterize the proposed system. ",

keywords = "Dc bipolar systems, dc distribution, dc transmission, multilevel converter",

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AU - Li, Zhongxi

AU - Dekka, Apparao

AU - Rosenthal, Luis

AU - Bahamonde I., Hans

AU - Peterchev, Angel V.

AU - Goetz, Stefan M.

PY - 2021/4

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AB - This article proposes a novel bipolar-type dc system suitable for both distribution and transmission systems based on modular multilevel series/parallel converters (MMSPCs). The system features decoupled operations of each pole of the bipolar system, being able to operate in both asymmetrical and regenerative modes. This enables two independent dc systems by using a single grid-tied converter. The MMSPC is based on a three-switch cell configuration and enables a simple balancing mechanism in combination with a wide range of output voltage frequencies. The simple balancing mechanism is the key to enable the dc operation and lead to simpler scalability for different voltage levels. Theoretical studies and experimental results are provided to verify and characterize the proposed system.

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Modular Multilevel Series/Parallel Converter for Bipolar DC Distribution and Transmission

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