Operation of three-phase modular multilevel converter (MMC) with reduced number of arms

Ahmed Elserougi; Shehab Ahmed; Ahmed Massoud

doi:10.1109/ICIT.2016.7474778

Operation of three-phase modular multilevel converter (MMC) with reduced number of arms

Ahmed Elserougi, Shehab Ahmed, Ahmed Massoud

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

8 Scopus citations

Abstract

Conventional three-phase MMC consists of six-arms, each arm is controlled to generate unipolar voltage ranging from zero to Vdc where Vdc is the input DC voltage. Each arm voltage has two components (DC and AC components). In this work, the operation of MMC with reduced number of arms (four arms only), correspondingly reduced cost is presented. This mode can be also used with the conventional three-phase MMC in case of faulty leg. In the presented approach, only two legs (i.e. four arms) are considered, where two out of the three phases are connected to these legs, while the third phase is tapped from the mid-point of the DC supply. To assure generating three-phase output voltages, the AC components in the presented approach will depend on the line-voltages. As the voltage per arm is limited to Vdc, the peak of line-voltage in the suggested mode is limited to 0.5 Vdc, i.e. the generated phase voltages will have a peak of 0.5Vdc/√3 (i.e. 57.7% compared to conventional three-phase MMC with same input voltage). A detailed illustration of the operational concept of the proposed architecture is presented in this work. The simulation results of the suggested approach is presented to validate the proposed concept.

Original language	English (US)
Title of host publication	Proceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	355-359
Number of pages	5
ISBN (Electronic)	9781467380751
DOIs	https://doi.org/10.1109/ICIT.2016.7474778
State	Published - May 19 2016
Externally published	Yes
Event	IEEE International Conference on Industrial Technology, ICIT 2016 - Taipei, Taiwan, Province of China Duration: Mar 14 2016 → Mar 17 2016

Publication series

Name	Proceedings of the IEEE International Conference on Industrial Technology
Volume	2016-May

Conference

Conference	IEEE International Conference on Industrial Technology, ICIT 2016
Country/Territory	Taiwan, Province of China
City	Taipei
Period	03/14/16 → 03/17/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

Modular Multilevel Converter
Reduced number of arms

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering

Access to Document

10.1109/ICIT.2016.7474778

Cite this

Elserougi, A., Ahmed, S., & Massoud, A. (2016). Operation of three-phase modular multilevel converter (MMC) with reduced number of arms. In Proceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016 (pp. 355-359). Article 7474778 (Proceedings of the IEEE International Conference on Industrial Technology; Vol. 2016-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICIT.2016.7474778

Elserougi, Ahmed ; Ahmed, Shehab ; Massoud, Ahmed. / Operation of three-phase modular multilevel converter (MMC) with reduced number of arms. Proceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016. Institute of Electrical and Electronics Engineers Inc., 2016. pp. 355-359 (Proceedings of the IEEE International Conference on Industrial Technology).

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abstract = "Conventional three-phase MMC consists of six-arms, each arm is controlled to generate unipolar voltage ranging from zero to Vdc where Vdc is the input DC voltage. Each arm voltage has two components (DC and AC components). In this work, the operation of MMC with reduced number of arms (four arms only), correspondingly reduced cost is presented. This mode can be also used with the conventional three-phase MMC in case of faulty leg. In the presented approach, only two legs (i.e. four arms) are considered, where two out of the three phases are connected to these legs, while the third phase is tapped from the mid-point of the DC supply. To assure generating three-phase output voltages, the AC components in the presented approach will depend on the line-voltages. As the voltage per arm is limited to Vdc, the peak of line-voltage in the suggested mode is limited to 0.5 Vdc, i.e. the generated phase voltages will have a peak of 0.5Vdc/√3 (i.e. 57.7% compared to conventional three-phase MMC with same input voltage). A detailed illustration of the operational concept of the proposed architecture is presented in this work. The simulation results of the suggested approach is presented to validate the proposed concept.",

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Elserougi, A, Ahmed, S & Massoud, A 2016, Operation of three-phase modular multilevel converter (MMC) with reduced number of arms. in Proceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016., 7474778, Proceedings of the IEEE International Conference on Industrial Technology, vol. 2016-May, Institute of Electrical and Electronics Engineers Inc., pp. 355-359, IEEE International Conference on Industrial Technology, ICIT 2016, Taipei, Taiwan, Province of China, 03/14/16. https://doi.org/10.1109/ICIT.2016.7474778

Operation of three-phase modular multilevel converter (MMC) with reduced number of arms. / Elserougi, Ahmed; Ahmed, Shehab; Massoud, Ahmed.
Proceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016. Institute of Electrical and Electronics Engineers Inc., 2016. p. 355-359 7474778 (Proceedings of the IEEE International Conference on Industrial Technology; Vol. 2016-May).

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

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AU - Ahmed, Shehab

AU - Massoud, Ahmed

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N2 - Conventional three-phase MMC consists of six-arms, each arm is controlled to generate unipolar voltage ranging from zero to Vdc where Vdc is the input DC voltage. Each arm voltage has two components (DC and AC components). In this work, the operation of MMC with reduced number of arms (four arms only), correspondingly reduced cost is presented. This mode can be also used with the conventional three-phase MMC in case of faulty leg. In the presented approach, only two legs (i.e. four arms) are considered, where two out of the three phases are connected to these legs, while the third phase is tapped from the mid-point of the DC supply. To assure generating three-phase output voltages, the AC components in the presented approach will depend on the line-voltages. As the voltage per arm is limited to Vdc, the peak of line-voltage in the suggested mode is limited to 0.5 Vdc, i.e. the generated phase voltages will have a peak of 0.5Vdc/√3 (i.e. 57.7% compared to conventional three-phase MMC with same input voltage). A detailed illustration of the operational concept of the proposed architecture is presented in this work. The simulation results of the suggested approach is presented to validate the proposed concept.

AB - Conventional three-phase MMC consists of six-arms, each arm is controlled to generate unipolar voltage ranging from zero to Vdc where Vdc is the input DC voltage. Each arm voltage has two components (DC and AC components). In this work, the operation of MMC with reduced number of arms (four arms only), correspondingly reduced cost is presented. This mode can be also used with the conventional three-phase MMC in case of faulty leg. In the presented approach, only two legs (i.e. four arms) are considered, where two out of the three phases are connected to these legs, while the third phase is tapped from the mid-point of the DC supply. To assure generating three-phase output voltages, the AC components in the presented approach will depend on the line-voltages. As the voltage per arm is limited to Vdc, the peak of line-voltage in the suggested mode is limited to 0.5 Vdc, i.e. the generated phase voltages will have a peak of 0.5Vdc/√3 (i.e. 57.7% compared to conventional three-phase MMC with same input voltage). A detailed illustration of the operational concept of the proposed architecture is presented in this work. The simulation results of the suggested approach is presented to validate the proposed concept.

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PB - Institute of Electrical and Electronics Engineers Inc.

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ER -

Elserougi A, Ahmed S, Massoud A. Operation of three-phase modular multilevel converter (MMC) with reduced number of arms. In Proceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016. Institute of Electrical and Electronics Engineers Inc. 2016. p. 355-359. 7474778. (Proceedings of the IEEE International Conference on Industrial Technology). doi: 10.1109/ICIT.2016.7474778

Operation of three-phase modular multilevel converter (MMC) with reduced number of arms

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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