Reverse-blocking modular multilevel converter for battery energy storage systems

doi:10.1007/s40565-017-0300-5

Home > Archive>Volume 5, Issue 4, 2017 >652-662. DOI:10.1007/s40565-017-0300-5

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Reverse-blocking modular multilevel converter for battery energy storage systems

DOI:

10.1007/s40565-017-0300-5

Author:

Xiaofeng YANG
Xiaofeng YANG
School of Electrical Engineering, Beijing Jiaotong University, Beijing, China
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Yao XUE
Yao XUE
School of Electrical Engineering, Beijing Jiaotong University, Beijing, China
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Bowei CHEN
Bowei CHEN
School of Electrical Engineering, Beijing Jiaotong University, Beijing, China
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Yajie MU
Yajie MU
School of Electrical Engineering, Beijing Jiaotong University, Beijing, China
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Zhiqin LIN
Zhiqin LIN
School of Electrical Engineering, Beijing Jiaotong University, Beijing, China
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Trillion Q. ZHENG
Trillion Q. ZHENG
School of Electrical Engineering, Beijing Jiaotong University, Beijing, China
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Seiki IGARASHI
Seiki IGARASHI
Fuji Electric Co., Ltd., Tokyo, Japan
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Affiliation:

1.School of Electrical Engineering, Beijing Jiaotong University, Beijing, China 2.Fuji Electric Co., Ltd., Tokyo, Japan

Fund Project:

State Key Laboratory of Large Electric Drive System and Equipment Technology (No. SKLLDJ042016005), the National Key Research and Development Program of China (No. 2016YFE0131700), and the National Natural Science Foundation of China (No. 51577010)

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Abstract:

Energy storage systems with multilevel converters play an important role in modern electric power systems with large-scale renewable energy integration. This paper proposes a reverse-blocking modular multilevel converter for a battery energy storage system (RB-MMC-BESS). Besides integrating distributed low-voltage batteries to medium or high voltage grids, with the inherited advantages of traditional MMCs, the RB-MMC-BESS also provides improved DC fault handling capability. This paper analyzes such a new converter configuration and its operating principles. Control algorithms are developed for AC side power control and the balancing of battery state of charge. The blocking mechanism to manage a DC pole-to-pole fault analyzed in depth. Comprehensive simulation results validate both the feasibility of the RB-MMC-BESS topology and the effectiveness of the control and fault handling strategies.

Key words:Reverse blocking, Modular multilevel converter, Battery energy storage system, SOC control, Fault blocking

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Online: July 21,2017
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