DC/DC converters based on hybrid MMC for HVDC grid interconnection

Rong Zeng; Lie Xu; Liangzhong Yao

doi:10.1049/cp.2015.0090

DC/DC converters based on hybrid MMC for HVDC grid interconnection

Rong Zeng, Lie Xu, Liangzhong Yao

Electronic And Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

45 Citations (Scopus)

108 Downloads (Pure)

Abstract

This paper presents a multi-terminal high-power DC/DC converter configuration based on hybrid MMC topology with fault blocking capability for interconnecting HVDC systems. Its main functions include bidirectional power flow, step-up and step-down operation and fault isolation equivalent to a DC circuit breaker. By contrast to the conventional MMC based DC/DC converter, the proposed DC/DC converter with hybrid MMC configuration has the advantage of being able to block the DC/DC converter terminal connecting to faulty DC grid section, while continue operating the other terminals connected to healthy DC grid sections. The proposed DC/DC converter operation is analyzed and its control is described. Simulation results using Matlab/Simulink are presented to demonstrate the robust performance during dc fault conditions.

Original language	English
Title of host publication	11th IET International Conference on AC and DC Power Transmission
Pages	1-6
Number of pages	6
DOIs	https://doi.org/10.1049/cp.2015.0090
Publication status	Published - 1 Feb 2015

Keywords

bidirectional power flow
step-up operation
step-down operation
simulink
power transmission faults
power system interconnection
power grids
circuit breakers
DC/DC converter

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10.1049/cp.2015.0090

Zeng-etal-IET-ICACDCPT-2015-DC-DC-converters-based-on-hybrid-MMC-for-HVDCAccepted author manuscript, 814 KB

Cite this

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title = "DC/DC converters based on hybrid MMC for HVDC grid interconnection",

abstract = "This paper presents a multi-terminal high-power DC/DC converter configuration based on hybrid MMC topology with fault blocking capability for interconnecting HVDC systems. Its main functions include bidirectional power flow, step-up and step-down operation and fault isolation equivalent to a DC circuit breaker. By contrast to the conventional MMC based DC/DC converter, the proposed DC/DC converter with hybrid MMC configuration has the advantage of being able to block the DC/DC converter terminal connecting to faulty DC grid section, while continue operating the other terminals connected to healthy DC grid sections. The proposed DC/DC converter operation is analyzed and its control is described. Simulation results using Matlab/Simulink are presented to demonstrate the robust performance during dc fault conditions.",

keywords = "bidirectional power flow, step-up operation, step-down operation, simulink, power transmission faults, power system interconnection, power grids, circuit breakers, DC/DC converter",

author = "Rong Zeng and Lie Xu and Liangzhong Yao",

note = "This paper is a postprint of a paper submitted to and accepted for publication in the 11th IET International Conference on AC and DC Power Transmission and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library",

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doi = "10.1049/cp.2015.0090",

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AU - Zeng, Rong

AU - Xu, Lie

AU - Yao, Liangzhong

N1 - This paper is a postprint of a paper submitted to and accepted for publication in the 11th IET International Conference on AC and DC Power Transmission and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library

PY - 2015/2/1

Y1 - 2015/2/1

N2 - This paper presents a multi-terminal high-power DC/DC converter configuration based on hybrid MMC topology with fault blocking capability for interconnecting HVDC systems. Its main functions include bidirectional power flow, step-up and step-down operation and fault isolation equivalent to a DC circuit breaker. By contrast to the conventional MMC based DC/DC converter, the proposed DC/DC converter with hybrid MMC configuration has the advantage of being able to block the DC/DC converter terminal connecting to faulty DC grid section, while continue operating the other terminals connected to healthy DC grid sections. The proposed DC/DC converter operation is analyzed and its control is described. Simulation results using Matlab/Simulink are presented to demonstrate the robust performance during dc fault conditions.

AB - This paper presents a multi-terminal high-power DC/DC converter configuration based on hybrid MMC topology with fault blocking capability for interconnecting HVDC systems. Its main functions include bidirectional power flow, step-up and step-down operation and fault isolation equivalent to a DC circuit breaker. By contrast to the conventional MMC based DC/DC converter, the proposed DC/DC converter with hybrid MMC configuration has the advantage of being able to block the DC/DC converter terminal connecting to faulty DC grid section, while continue operating the other terminals connected to healthy DC grid sections. The proposed DC/DC converter operation is analyzed and its control is described. Simulation results using Matlab/Simulink are presented to demonstrate the robust performance during dc fault conditions.

KW - bidirectional power flow

KW - step-up operation

KW - step-down operation

KW - simulink

KW - power transmission faults

KW - power system interconnection

KW - power grids

KW - circuit breakers

KW - DC/DC converter

U2 - 10.1049/cp.2015.0090

DO - 10.1049/cp.2015.0090

M3 - Conference contribution book

SN - 978-1-84919-982-7

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EP - 6

BT - 11th IET International Conference on AC and DC Power Transmission

ER -

DC/DC converters based on hybrid MMC for HVDC grid interconnection

Abstract

Keywords

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