Closed-loop precharge control of modular multilevel converters during start-up processes

Binbin Li; Dandan Xu; Yi Zhang; Rongfeng Yang; Gaolin Wang; Wei Wang; Dianguo Xu

doi:10.1109/TPEL.2014.2334055

Closed-loop precharge control of modular multilevel converters during start-up processes

Binbin Li^*
, Dandan Xu
, Yi Zhang
, Rongfeng Yang
, Gaolin Wang
, Wei Wang
, Dianguo Xu

^*Corresponding author for this work

School of Electrical Engineering and Automation, Harbin Institute of Technology

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

104 Scopus citations

Abstract

This letter respectively presents two closed-loop precharge control methods to fully charge the submodule (SM) capacitors of the modular multilevel converter (MMC) during dc-side and ac-side start-up processes. The proposed methods are aimed at regulating a constant charging current thus reducing the start-up time and eliminating the inrush current. Besides, capacitor voltage balancing control is also embedded into the controller to equally charge the SM capacitors. Due to the flexibility of the closed-loop control, these methods are applicable to any MMC applications regardless of the number of SMs. Finally, effectiveness of the proposed methods is verified experimentally on a three-phase prototype of MMC.

Original language	English
Article number	6846354
Pages (from-to)	524-531
Number of pages	8
Journal	IEEE Transactions on Power Electronics
Volume	30
Issue number	2
DOIs	https://doi.org/10.1109/TPEL.2014.2334055
State	Published - 1 Feb 2015
Externally published	Yes

Keywords

Closed-loop precharge control
modular multilevel converter (MMC)
start-up scheme

Access to Document

10.1109/TPEL.2014.2334055

Cite this

@article{3bfd83d0c0a44ea6b187f22ef8b875c0,

title = "Closed-loop precharge control of modular multilevel converters during start-up processes",

abstract = "This letter respectively presents two closed-loop precharge control methods to fully charge the submodule (SM) capacitors of the modular multilevel converter (MMC) during dc-side and ac-side start-up processes. The proposed methods are aimed at regulating a constant charging current thus reducing the start-up time and eliminating the inrush current. Besides, capacitor voltage balancing control is also embedded into the controller to equally charge the SM capacitors. Due to the flexibility of the closed-loop control, these methods are applicable to any MMC applications regardless of the number of SMs. Finally, effectiveness of the proposed methods is verified experimentally on a three-phase prototype of MMC.",

keywords = "Closed-loop precharge control, modular multilevel converter (MMC), start-up scheme",

author = "Binbin Li and Dandan Xu and Yi Zhang and Rongfeng Yang and Gaolin Wang and Wei Wang and Dianguo Xu",

note = "Publisher Copyright: {\textcopyright} 1986-2012 IEEE.",

year = "2015",

month = feb,

day = "1",

doi = "10.1109/TPEL.2014.2334055",

language = "英语",

volume = "30",

pages = "524--531",

journal = "IEEE Transactions on Power Electronics",

issn = "0885-8993",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2",

}

TY - JOUR

T1 - Closed-loop precharge control of modular multilevel converters during start-up processes

AU - Li, Binbin

AU - Xu, Dandan

AU - Zhang, Yi

AU - Yang, Rongfeng

AU - Wang, Gaolin

AU - Wang, Wei

AU - Xu, Dianguo

PY - 2015/2/1

Y1 - 2015/2/1

N2 - This letter respectively presents two closed-loop precharge control methods to fully charge the submodule (SM) capacitors of the modular multilevel converter (MMC) during dc-side and ac-side start-up processes. The proposed methods are aimed at regulating a constant charging current thus reducing the start-up time and eliminating the inrush current. Besides, capacitor voltage balancing control is also embedded into the controller to equally charge the SM capacitors. Due to the flexibility of the closed-loop control, these methods are applicable to any MMC applications regardless of the number of SMs. Finally, effectiveness of the proposed methods is verified experimentally on a three-phase prototype of MMC.

AB - This letter respectively presents two closed-loop precharge control methods to fully charge the submodule (SM) capacitors of the modular multilevel converter (MMC) during dc-side and ac-side start-up processes. The proposed methods are aimed at regulating a constant charging current thus reducing the start-up time and eliminating the inrush current. Besides, capacitor voltage balancing control is also embedded into the controller to equally charge the SM capacitors. Due to the flexibility of the closed-loop control, these methods are applicable to any MMC applications regardless of the number of SMs. Finally, effectiveness of the proposed methods is verified experimentally on a three-phase prototype of MMC.

KW - Closed-loop precharge control

KW - modular multilevel converter (MMC)

KW - start-up scheme

UR - https://www.scopus.com/pages/publications/84908012468

U2 - 10.1109/TPEL.2014.2334055

DO - 10.1109/TPEL.2014.2334055

M3 - 文章

AN - SCOPUS:84908012468

SN - 0885-8993

VL - 30

SP - 524

EP - 531

JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

IS - 2

M1 - 6846354

ER -

Closed-loop precharge control of modular multilevel converters during start-up processes

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this