Hybrid cascaded modular multilevel converter with DC fault ride-through capability for HVDC transmission system

Rui Li; Grain Philip Adam; Derrick Holliday; John E. Fletcher; Barry W. Williams

doi:10.1109/TPWRD.2015.2389758

Hybrid cascaded modular multilevel converter with DC fault ride-through capability for HVDC transmission system

Rui Li, Grain Philip Adam, Derrick Holliday, John E. Fletcher, Barry W. Williams

Electronic And Electrical Engineering

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

108 Citations (Scopus)

450 Downloads (Pure)

Abstract

A new hybrid cascaded modular multilevel converter for high-voltage dc (HVDC) transmission system is presented. The half-bridge (HB) cells are used on the main power stage and the cascade full-bridge (FB) cells are connected to its ac terminals. The main power stage generates the fundamental voltages with quite low switching frequency, resulting relatively low losses. The cascaded FB cells only attenuate the harmonics generated by the main power stage, without contribution to the power transfer. Thus, the energy storage requirement of the cascaded FB cells is low and the capacitance of FB cells is reduced significantly. Due to the dc fault reverse blocking capability of the cascaded FB cells, the proposed topology can ride-through the pole-to-pole dc fault. In addition the soft restart is achieved after the fault eliminates, without exposing the system to significant inrush current. Besides, the average-value model of the proposed topology is derived, based on which the control strategy is presented. The results show the feasibility of the proposed converter.

Original language	English
Pages (from-to)	1853-1862
Number of pages	10
Journal	IEEE Transactions on Power Delivery
Volume	30
Issue number	4
Early online date	9 Jan 2015
DOIs	https://doi.org/10.1109/TPWRD.2015.2389758
Publication status	Published - 1 Aug 2015

Keywords

DC fault blocking
DC fault tolerant
hybrid cascaded modular multilevel converter (HC-MMC)
voltage-source-converter high-voltage dc (VSC-HVDC) transmission system
soft restart

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10.1109/TPWRD.2015.2389758

Li-etal-IEEE-TOPD-2015-Hybrid-cascaded-modular-multilevel-converter-with-DC-fault-ride-through-capabilityAccepted author manuscript, 1.3 MB

1 Finished

DC Transmission and Distribution Networks
Williams, B. & Holliday, D.
EPSRC (Engineering and Physical Sciences Research Council)
1/03/13 → 16/12/16
Project: Research

Cite this

@article{705032e6dbd942eb8f647e26457b827a,

title = "Hybrid cascaded modular multilevel converter with DC fault ride-through capability for HVDC transmission system",

abstract = "A new hybrid cascaded modular multilevel converter for high-voltage dc (HVDC) transmission system is presented. The half-bridge (HB) cells are used on the main power stage and the cascade full-bridge (FB) cells are connected to its ac terminals. The main power stage generates the fundamental voltages with quite low switching frequency, resulting relatively low losses. The cascaded FB cells only attenuate the harmonics generated by the main power stage, without contribution to the power transfer. Thus, the energy storage requirement of the cascaded FB cells is low and the capacitance of FB cells is reduced significantly. Due to the dc fault reverse blocking capability of the cascaded FB cells, the proposed topology can ride-through the pole-to-pole dc fault. In addition the soft restart is achieved after the fault eliminates, without exposing the system to significant inrush current. Besides, the average-value model of the proposed topology is derived, based on which the control strategy is presented. The results show the feasibility of the proposed converter.",

keywords = "DC fault blocking, DC fault tolerant, hybrid cascaded modular multilevel converter (HC-MMC), voltage-source-converter high-voltage dc (VSC-HVDC) transmission system, soft restart",

author = "Rui Li and Adam, {Grain Philip} and Derrick Holliday and Fletcher, {John E.} and Williams, {Barry W.}",

note = "(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.",

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AU - Li, Rui

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AU - Fletcher, John E.

AU - Williams, Barry W.

N1 - (c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

PY - 2015/8/1

Y1 - 2015/8/1

N2 - A new hybrid cascaded modular multilevel converter for high-voltage dc (HVDC) transmission system is presented. The half-bridge (HB) cells are used on the main power stage and the cascade full-bridge (FB) cells are connected to its ac terminals. The main power stage generates the fundamental voltages with quite low switching frequency, resulting relatively low losses. The cascaded FB cells only attenuate the harmonics generated by the main power stage, without contribution to the power transfer. Thus, the energy storage requirement of the cascaded FB cells is low and the capacitance of FB cells is reduced significantly. Due to the dc fault reverse blocking capability of the cascaded FB cells, the proposed topology can ride-through the pole-to-pole dc fault. In addition the soft restart is achieved after the fault eliminates, without exposing the system to significant inrush current. Besides, the average-value model of the proposed topology is derived, based on which the control strategy is presented. The results show the feasibility of the proposed converter.

AB - A new hybrid cascaded modular multilevel converter for high-voltage dc (HVDC) transmission system is presented. The half-bridge (HB) cells are used on the main power stage and the cascade full-bridge (FB) cells are connected to its ac terminals. The main power stage generates the fundamental voltages with quite low switching frequency, resulting relatively low losses. The cascaded FB cells only attenuate the harmonics generated by the main power stage, without contribution to the power transfer. Thus, the energy storage requirement of the cascaded FB cells is low and the capacitance of FB cells is reduced significantly. Due to the dc fault reverse blocking capability of the cascaded FB cells, the proposed topology can ride-through the pole-to-pole dc fault. In addition the soft restart is achieved after the fault eliminates, without exposing the system to significant inrush current. Besides, the average-value model of the proposed topology is derived, based on which the control strategy is presented. The results show the feasibility of the proposed converter.

KW - DC fault blocking

KW - DC fault tolerant

KW - hybrid cascaded modular multilevel converter (HC-MMC)

KW - voltage-source-converter high-voltage dc (VSC-HVDC) transmission system

KW - soft restart

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DO - 10.1109/TPWRD.2015.2389758

M3 - Article

VL - 30

SP - 1853

EP - 1862

JO - IEEE Transactions on Power Delivery

JF - IEEE Transactions on Power Delivery

SN - 0885-8977

IS - 4

ER -

Hybrid cascaded modular multilevel converter with DC fault ride-through capability for HVDC transmission system

Abstract

Keywords

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DC Transmission and Distribution Networks

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