Seamless Transition Control for Modular Multilevel Converters When Inserting a Cold-Reserve Redundant Submodule

Binbin Li; Yi Zhang; Rongfeng Yang; Rong Xu; Dianguo Xu; Wei Wang

doi:10.1109/TPEL.2015.2392778

Seamless Transition Control for Modular Multilevel Converters When Inserting a Cold-Reserve Redundant Submodule

Binbin Li, Yi Zhang, Rongfeng Yang, Rong Xu, Dianguo Xu, Wei Wang

Publikation: Bidrag til tidsskrift › Letter › peer review

104 Citationer (Scopus)

Abstract

Redundant submodules (SMs) are always required to ensure the reliability of the modular multilevel converter (MMC). In this letter, a new control method for MMC is proposed to seamlessly ride through the period when bypassing a faulty SM and inserting a redundant SM. With the proposed method, the redundant SMs can be arranged in cold reserve mode so as to reduce the conduction losses, and when faced with SM failures, bypass of the faulty SM and insertion of the redundant SM will incur no inrush current problems. Besides, the capacitor of the newly inserted SM can get linearly charged. Validity of the proposed control method is verified experimentally based on a single-phase MMC prototype.

Originalsprog	Engelsk
Artikelnummer	7010946
Tidsskrift	IEEE Transactions on Power Electronics
Vol/bind	30
Udgave nummer	8
Sider (fra-til)	4052-4057
Antal sider	6
ISSN	0885-8993
DOI	https://doi.org/10.1109/TPEL.2015.2392778
Status	Udgivet - aug. 2015

Bibliografisk note

Publisher Copyright:
© 1986-2012 IEEE.

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10.1109/TPEL.2015.2392778

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Citationsformater

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title = "Seamless Transition Control for Modular Multilevel Converters When Inserting a Cold-Reserve Redundant Submodule",

abstract = "Redundant submodules (SMs) are always required to ensure the reliability of the modular multilevel converter (MMC). In this letter, a new control method for MMC is proposed to seamlessly ride through the period when bypassing a faulty SM and inserting a redundant SM. With the proposed method, the redundant SMs can be arranged in cold reserve mode so as to reduce the conduction losses, and when faced with SM failures, bypass of the faulty SM and insertion of the redundant SM will incur no inrush current problems. Besides, the capacitor of the newly inserted SM can get linearly charged. Validity of the proposed control method is verified experimentally based on a single-phase MMC prototype.",

keywords = "Cold reserve, modular multilevel converter (MMC), redundancy, seamless transition, submodule (SM)",

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

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T1 - Seamless Transition Control for Modular Multilevel Converters When Inserting a Cold-Reserve Redundant Submodule

AU - Li, Binbin

AU - Zhang, Yi

AU - Yang, Rongfeng

AU - Xu, Rong

AU - Xu, Dianguo

AU - Wang, Wei

PY - 2015/8

Y1 - 2015/8

N2 - Redundant submodules (SMs) are always required to ensure the reliability of the modular multilevel converter (MMC). In this letter, a new control method for MMC is proposed to seamlessly ride through the period when bypassing a faulty SM and inserting a redundant SM. With the proposed method, the redundant SMs can be arranged in cold reserve mode so as to reduce the conduction losses, and when faced with SM failures, bypass of the faulty SM and insertion of the redundant SM will incur no inrush current problems. Besides, the capacitor of the newly inserted SM can get linearly charged. Validity of the proposed control method is verified experimentally based on a single-phase MMC prototype.

AB - Redundant submodules (SMs) are always required to ensure the reliability of the modular multilevel converter (MMC). In this letter, a new control method for MMC is proposed to seamlessly ride through the period when bypassing a faulty SM and inserting a redundant SM. With the proposed method, the redundant SMs can be arranged in cold reserve mode so as to reduce the conduction losses, and when faced with SM failures, bypass of the faulty SM and insertion of the redundant SM will incur no inrush current problems. Besides, the capacitor of the newly inserted SM can get linearly charged. Validity of the proposed control method is verified experimentally based on a single-phase MMC prototype.

KW - Cold reserve

KW - modular multilevel converter (MMC)

KW - redundancy

KW - seamless transition

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Seamless Transition Control for Modular Multilevel Converters When Inserting a Cold-Reserve Redundant Submodule

Abstract

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