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

Autor: I Hans Bahamonde, Angel V. Peterchev, F Ricardo Lizana, Apparao Dekka, Luis Rosenthal, Stefan M. Goetz, Zhongxi Li, Sebastian Rivera
Rok vydání: 2021
Předmět:
Zdroj: IEEE Journal of Emerging and Selected Topics in Power Electronics. 9:1765-1779
ISSN: 2168-6785
2168-6777
DOI: 10.1109/jestpe.2020.2998738
Popis: 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.
Databáze: OpenAIRE