Fault-tolerant operation scheme for modular multilevel converter under arm energy imbalance

Jaesik Kang; Heejin Kim; Kyeon Hur; Hong Ju Jung; Dong Su Lee

doi:10.1109/PEDS.2017.8289247

Fault-tolerant operation scheme for modular multilevel converter under arm energy imbalance

Jaesik Kang, Heejin Kim, Kyeon Hur, Hong Ju Jung, Dong Su Lee

Department of Electrical and Electronic Engineering

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

Abstract

This paper proposes a fault-tolerant operation scheme for modular multilevel converter (MMC) when a sub-module (SM) fault occurs. The MMC is featured with N-level corresponding to the number of SMs activated for an operation. The number of these SMs in the upper and lower arms should be the same, and the energy in each arm should be balanced during the normal operation state. The arm with faulty SMs however, results in the arm energy imbalance between upper and lower arms, and can cause an instability on voltage sourced-converter (VSC) control in the MMC by imbalancing the SM capacitor voltage, interrupting the power transfer. This paper thus first elaborates on the internal dynamics of MMC with faulty SMs analytically, and then develops a practical fault-tolerant operation scheme for non-interruptible power transfer. Rigorous simulation studies using PSCAD/EMTDC and PLECS demonstrate the validity and effectiveness of the proposed scheme. This research should help make the most of the topological redundancy in the MMC for the fail-safe power transfer.

Original language	English
Title of host publication	2017 IEEE 12th International Conference on Power Electronics and Drive Systems, PEDS 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	801-807
Number of pages	7
ISBN (Electronic)	9781509023646
DOIs	https://doi.org/10.1109/PEDS.2017.8289247
Publication status	Published - 2018 Feb 9
Event	12th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2017 - Honolulu, United States Duration: 2017 Dec 12 → 2017 Dec 15

Publication series

Name	Proceedings of the International Conference on Power Electronics and Drive Systems
Volume	2017-December
ISSN (Print)	2164-5256
ISSN (Electronic)	2164-5264

Other

Other	12th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2017
Country/Territory	United States
City	Honolulu
Period	17/12/12 → 17/12/15

Bibliographical note

Publisher Copyright:
© 2017 IEEE.

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Access to Document

10.1109/PEDS.2017.8289247

Cite this

Kang, J., Kim, H., Hur, K., Jung, H. J., & Lee, D. S. (2018). Fault-tolerant operation scheme for modular multilevel converter under arm energy imbalance. In 2017 IEEE 12th International Conference on Power Electronics and Drive Systems, PEDS 2017 (pp. 801-807). (Proceedings of the International Conference on Power Electronics and Drive Systems; Vol. 2017-December). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PEDS.2017.8289247

Kang, Jaesik ; Kim, Heejin ; Hur, Kyeon et al. / Fault-tolerant operation scheme for modular multilevel converter under arm energy imbalance. 2017 IEEE 12th International Conference on Power Electronics and Drive Systems, PEDS 2017. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 801-807 (Proceedings of the International Conference on Power Electronics and Drive Systems).

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abstract = "This paper proposes a fault-tolerant operation scheme for modular multilevel converter (MMC) when a sub-module (SM) fault occurs. The MMC is featured with N-level corresponding to the number of SMs activated for an operation. The number of these SMs in the upper and lower arms should be the same, and the energy in each arm should be balanced during the normal operation state. The arm with faulty SMs however, results in the arm energy imbalance between upper and lower arms, and can cause an instability on voltage sourced-converter (VSC) control in the MMC by imbalancing the SM capacitor voltage, interrupting the power transfer. This paper thus first elaborates on the internal dynamics of MMC with faulty SMs analytically, and then develops a practical fault-tolerant operation scheme for non-interruptible power transfer. Rigorous simulation studies using PSCAD/EMTDC and PLECS demonstrate the validity and effectiveness of the proposed scheme. This research should help make the most of the topological redundancy in the MMC for the fail-safe power transfer.",

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Kang, J, Kim, H, Hur, K, Jung, HJ & Lee, DS 2018, Fault-tolerant operation scheme for modular multilevel converter under arm energy imbalance. in 2017 IEEE 12th International Conference on Power Electronics and Drive Systems, PEDS 2017. Proceedings of the International Conference on Power Electronics and Drive Systems, vol. 2017-December, Institute of Electrical and Electronics Engineers Inc., pp. 801-807, 12th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2017, Honolulu, United States, 17/12/12. https://doi.org/10.1109/PEDS.2017.8289247

Fault-tolerant operation scheme for modular multilevel converter under arm energy imbalance. / Kang, Jaesik; Kim, Heejin; Hur, Kyeon et al.
2017 IEEE 12th International Conference on Power Electronics and Drive Systems, PEDS 2017. Institute of Electrical and Electronics Engineers Inc., 2018. p. 801-807 (Proceedings of the International Conference on Power Electronics and Drive Systems; Vol. 2017-December).

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

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N2 - This paper proposes a fault-tolerant operation scheme for modular multilevel converter (MMC) when a sub-module (SM) fault occurs. The MMC is featured with N-level corresponding to the number of SMs activated for an operation. The number of these SMs in the upper and lower arms should be the same, and the energy in each arm should be balanced during the normal operation state. The arm with faulty SMs however, results in the arm energy imbalance between upper and lower arms, and can cause an instability on voltage sourced-converter (VSC) control in the MMC by imbalancing the SM capacitor voltage, interrupting the power transfer. This paper thus first elaborates on the internal dynamics of MMC with faulty SMs analytically, and then develops a practical fault-tolerant operation scheme for non-interruptible power transfer. Rigorous simulation studies using PSCAD/EMTDC and PLECS demonstrate the validity and effectiveness of the proposed scheme. This research should help make the most of the topological redundancy in the MMC for the fail-safe power transfer.

AB - This paper proposes a fault-tolerant operation scheme for modular multilevel converter (MMC) when a sub-module (SM) fault occurs. The MMC is featured with N-level corresponding to the number of SMs activated for an operation. The number of these SMs in the upper and lower arms should be the same, and the energy in each arm should be balanced during the normal operation state. The arm with faulty SMs however, results in the arm energy imbalance between upper and lower arms, and can cause an instability on voltage sourced-converter (VSC) control in the MMC by imbalancing the SM capacitor voltage, interrupting the power transfer. This paper thus first elaborates on the internal dynamics of MMC with faulty SMs analytically, and then develops a practical fault-tolerant operation scheme for non-interruptible power transfer. Rigorous simulation studies using PSCAD/EMTDC and PLECS demonstrate the validity and effectiveness of the proposed scheme. This research should help make the most of the topological redundancy in the MMC for the fail-safe power transfer.

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Kang J, Kim H, Hur K, Jung HJ, Lee DS. Fault-tolerant operation scheme for modular multilevel converter under arm energy imbalance. In 2017 IEEE 12th International Conference on Power Electronics and Drive Systems, PEDS 2017. Institute of Electrical and Electronics Engineers Inc. 2018. p. 801-807. (Proceedings of the International Conference on Power Electronics and Drive Systems). doi: 10.1109/PEDS.2017.8289247

Fault-tolerant operation scheme for modular multilevel converter under arm energy imbalance

Abstract

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