Hybrid modular multilevel converter with reduced three-level cells in hvdc transmission system

Rui Li; Jing Wu; Liangzhong Yao; Yan Li; Barry Williams

doi:10.1109/IPEMC.2016.7512372

Hybrid modular multilevel converter with reduced three-level cells in hvdc transmission system

Rui Li, Jing Wu, Liangzhong Yao, Yan Li, Barry Williams

Electronic And Electrical Engineering

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

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Abstract

A hybrid MMC with reduced three-level (TL) cells is proposed. As well as the dc fault blocking capability, the proposed hybrid MMC provides the benefits of: lower conduction losses; fewer diode and switching devices, and; fewer shoot-through modes. Guidelines are developed to determine the required number of three-level cells to block a dc-side fault. It is also demonstrated that a further reduction in the number a three-level cells is possible if a rise in cell current and voltage is acceptable. This reduction is investigated. A lower number of three-level cells reduces losses and capital cost further. The hybrid MMC with the reduced number of three-level cells proves to be the most attractive approach compared with other MMCs and hybrid MMCs. The semiconductor count and conduction loss are 92.1% and 90.3% respectively of that of the MMC based entirely on full-bridge cells, without exposing the semiconductors to significant fault currents and over-voltages. The simulation results demonstrate the feasibility of the proposed hybrid converter.

Original language	English
Title of host publication	2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)
Publisher	IEEE
ISBN (Electronic)	9781509012107
ISBN (Print)	9781509012114
DOIs	https://doi.org/10.1109/IPEMC.2016.7512372
Publication status	Published - 22 May 2016
Event	8th International Power Electronics and Motion Control Conference-ECCE Asia(IPEMC 2016-ECCE Asia) - Platinum Hanjue Hotel, Hefei, China Duration: 22 May 2016 → 25 May 2016 http://www.ipemc2016.org/index.php

Conference

Conference	8th International Power Electronics and Motion Control Conference-ECCE Asia(IPEMC 2016-ECCE Asia)
Country/Territory	China
City	Hefei
Period	22/05/16 → 25/05/16
Internet address	http://www.ipemc2016.org/index.php

Keywords

dc fault blocking
HVDC transmission
hybrid modular multilevel converter (MMC)
fault currents
capacitors
circuit faults
hidden Markov models
capacitance
stress

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10.1109/IPEMC.2016.7512372

Li-etal-IPEMC2016-hybrid-modular-multilevel-converter-with-reduced-three-level-cellsAccepted author manuscript, 628 KB

Cite this

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title = "Hybrid modular multilevel converter with reduced three-level cells in hvdc transmission system",

abstract = "A hybrid MMC with reduced three-level (TL) cells is proposed. As well as the dc fault blocking capability, the proposed hybrid MMC provides the benefits of: lower conduction losses; fewer diode and switching devices, and; fewer shoot-through modes. Guidelines are developed to determine the required number of three-level cells to block a dc-side fault. It is also demonstrated that a further reduction in the number a three-level cells is possible if a rise in cell current and voltage is acceptable. This reduction is investigated. A lower number of three-level cells reduces losses and capital cost further. The hybrid MMC with the reduced number of three-level cells proves to be the most attractive approach compared with other MMCs and hybrid MMCs. The semiconductor count and conduction loss are 92.1% and 90.3% respectively of that of the MMC based entirely on full-bridge cells, without exposing the semiconductors to significant fault currents and over-voltages. The simulation results demonstrate the feasibility of the proposed hybrid converter.",

keywords = "dc fault blocking, HVDC transmission, hybrid modular multilevel converter (MMC), fault currents, capacitors, circuit faults, hidden Markov models, capacitance, stress",

author = "Rui Li and Jing Wu and Liangzhong Yao and Yan Li and Barry Williams",

note = "{\textcopyright} 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, 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 component of this work in other works.; 8th International Power Electronics and Motion Control Conference-ECCE Asia(IPEMC 2016-ECCE Asia) ; Conference date: 22-05-2016 Through 25-05-2016",

year = "2016",

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day = "22",

doi = "10.1109/IPEMC.2016.7512372",

language = "English",

isbn = "9781509012114",

booktitle = "2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)",

publisher = "IEEE",

url = "http://www.ipemc2016.org/index.php",

}

Li, R, Wu, J, Yao, L, Li, Y & Williams, B 2016, Hybrid modular multilevel converter with reduced three-level cells in hvdc transmission system. in 2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia). IEEE, 8th International Power Electronics and Motion Control Conference-ECCE Asia(IPEMC 2016-ECCE Asia), Hefei, China, 22/05/16. https://doi.org/10.1109/IPEMC.2016.7512372

TY - GEN

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AU - Li, Rui

AU - Wu, Jing

AU - Yao, Liangzhong

AU - Li, Yan

AU - Williams, Barry

N1 - © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, 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 component of this work in other works.

PY - 2016/5/22

Y1 - 2016/5/22

N2 - A hybrid MMC with reduced three-level (TL) cells is proposed. As well as the dc fault blocking capability, the proposed hybrid MMC provides the benefits of: lower conduction losses; fewer diode and switching devices, and; fewer shoot-through modes. Guidelines are developed to determine the required number of three-level cells to block a dc-side fault. It is also demonstrated that a further reduction in the number a three-level cells is possible if a rise in cell current and voltage is acceptable. This reduction is investigated. A lower number of three-level cells reduces losses and capital cost further. The hybrid MMC with the reduced number of three-level cells proves to be the most attractive approach compared with other MMCs and hybrid MMCs. The semiconductor count and conduction loss are 92.1% and 90.3% respectively of that of the MMC based entirely on full-bridge cells, without exposing the semiconductors to significant fault currents and over-voltages. The simulation results demonstrate the feasibility of the proposed hybrid converter.

AB - A hybrid MMC with reduced three-level (TL) cells is proposed. As well as the dc fault blocking capability, the proposed hybrid MMC provides the benefits of: lower conduction losses; fewer diode and switching devices, and; fewer shoot-through modes. Guidelines are developed to determine the required number of three-level cells to block a dc-side fault. It is also demonstrated that a further reduction in the number a three-level cells is possible if a rise in cell current and voltage is acceptable. This reduction is investigated. A lower number of three-level cells reduces losses and capital cost further. The hybrid MMC with the reduced number of three-level cells proves to be the most attractive approach compared with other MMCs and hybrid MMCs. The semiconductor count and conduction loss are 92.1% and 90.3% respectively of that of the MMC based entirely on full-bridge cells, without exposing the semiconductors to significant fault currents and over-voltages. The simulation results demonstrate the feasibility of the proposed hybrid converter.

KW - dc fault blocking

KW - HVDC transmission

KW - hybrid modular multilevel converter (MMC)

KW - fault currents

KW - capacitors

KW - circuit faults

KW - hidden Markov models

KW - capacitance

KW - stress

U2 - 10.1109/IPEMC.2016.7512372

DO - 10.1109/IPEMC.2016.7512372

M3 - Conference contribution book

SN - 9781509012114

BT - 2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)

PB - IEEE

T2 - 8th International Power Electronics and Motion Control Conference-ECCE Asia(IPEMC 2016-ECCE Asia)

Y2 - 22 May 2016 through 25 May 2016

ER -

Hybrid modular multilevel converter with reduced three-level cells in hvdc transmission system

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