A Novel Harmonic Control Method for MMC Combining Improved Nearest Level Control and Selective Harmonic Elimination method

Yu Jin; Songda Wang; Qian Xiao; Yiqi Liu; Yunfei Mu; Yanchao Ji; Sanjay K. Chaudhary; Remus Teodorescu

doi:10.1109/ECCE.2019.8912529

A Novel Harmonic Control Method for MMC Combining Improved Nearest Level Control and Selective Harmonic Elimination method

Yu Jin, Songda Wang, Qian Xiao^*, Yiqi Liu, Yunfei Mu, Yanchao Ji, Sanjay K. Chaudhary, Remus Teodorescu

^*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

8 Citations (Scopus)

Abstract

This paper proposes a novel harmonic control method combining the improved nearest level control (NLC) and selective harmonic elimination (SHE) method. For the proposed improved NLC, it is applied on the voltage reference of the output terminals instead of the voltage reference of each arm. It has the advantages of higher control accuracy and better harmonic performance especially for the medium voltage application where the number of submodule (SM) is not high. For SHE method, it is applied in this paper to eliminate one certain harmonic by adding an additional signal pulse in each quarter wave. By combination of the two methods, one certain undesired harmonic can be eliminated while maintaining the low switching frequency of NLC. In addition, a novel hysteresis circulating current controller is introduced in this paper, which can control the circulating current, and then effectively regulate the arm energy. Compared with conventional NLC method, the proposed method provides a better harmonic performance and eliminates one certain harmonic at the price of slightly increase of the switching frequency. Moreover, since only one SHE pulse is added in a quarter wave, the additional SHE angles can be directly calculated by equation and do not require other optimal algorithm. Therefore, it can be applied online with variable modulation index. Taking the fifth order harmonic as an example, the simulation results verify the effectiveness of the proposed harmonic control method.

Original language	English
Title of host publication	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
Number of pages	8
Publisher	IEEE (Institute of Electrical and Electronics Engineers)
Publication date	Sept 2019
Pages	6368-6375
Article number	8912529
ISBN (Electronic)	9781728103952
DOIs	https://doi.org/10.1109/ECCE.2019.8912529
Publication status	Published - Sept 2019
Event	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States Duration: 29 Sept 2019 → 3 Oct 2019

Conference

Conference	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Country/Territory	United States
City	Baltimore
Period	29/09/2019 → 03/10/2019
Sponsor	IEEE Industry Application Society (IAS), IEEE Power Electronics Society (PELS)

Series	IEEE Energy Conversion Congress and Exposition
ISSN	2329-3721

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This paper would like to thank the Chinese Scholarship Council for its foundation for the research in Aalborg university, Denmark.

Funding Information:
This work is also supported in part by the National Key Research and Development Program of China (Grant no. 2017YFB0903300), the project of National Natural Science Foundation of China (Grant Nos. 51625702, and 51807135), and the Joint Fund Project of National Natural Science Foundation-State Grid Corporation (Grant no. U1766210).

Publisher Copyright:
© 2019 IEEE.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

Circulating current control
Harmonic control
Hysteresis control
Modular multilevel converter (MMC)
Nearest level control (NLC)
Selective harmonic elimination (SHE)

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10.1109/ECCE.2019.8912529

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Cite this

Jin, Y., Wang, S., Xiao, Q., Liu, Y., Mu, Y., Ji, Y., Chaudhary, S. K., & Teodorescu, R. (2019). A Novel Harmonic Control Method for MMC Combining Improved Nearest Level Control and Selective Harmonic Elimination method. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 6368-6375). Article 8912529 IEEE (Institute of Electrical and Electronics Engineers). https://doi.org/10.1109/ECCE.2019.8912529

@inproceedings{a718ffcfc9754a6abc5a45c650d8f23f,

title = "A Novel Harmonic Control Method for MMC Combining Improved Nearest Level Control and Selective Harmonic Elimination method",

abstract = "This paper proposes a novel harmonic control method combining the improved nearest level control (NLC) and selective harmonic elimination (SHE) method. For the proposed improved NLC, it is applied on the voltage reference of the output terminals instead of the voltage reference of each arm. It has the advantages of higher control accuracy and better harmonic performance especially for the medium voltage application where the number of submodule (SM) is not high. For SHE method, it is applied in this paper to eliminate one certain harmonic by adding an additional signal pulse in each quarter wave. By combination of the two methods, one certain undesired harmonic can be eliminated while maintaining the low switching frequency of NLC. In addition, a novel hysteresis circulating current controller is introduced in this paper, which can control the circulating current, and then effectively regulate the arm energy. Compared with conventional NLC method, the proposed method provides a better harmonic performance and eliminates one certain harmonic at the price of slightly increase of the switching frequency. Moreover, since only one SHE pulse is added in a quarter wave, the additional SHE angles can be directly calculated by equation and do not require other optimal algorithm. Therefore, it can be applied online with variable modulation index. Taking the fifth order harmonic as an example, the simulation results verify the effectiveness of the proposed harmonic control method.",

keywords = "Circulating current control, Harmonic control, Hysteresis control, Modular multilevel converter (MMC), Nearest level control (NLC), Selective harmonic elimination (SHE)",

author = "Yu Jin and Songda Wang and Qian Xiao and Yiqi Liu and Yunfei Mu and Yanchao Ji and Chaudhary, {Sanjay K.} and Remus Teodorescu",

note = "Funding Information: ACKNOWLEDGMENT This paper would like to thank the Chinese Scholarship Council for its foundation for the research in Aalborg university, Denmark. Funding Information: This work is also supported in part by the National Key Research and Development Program of China (Grant no. 2017YFB0903300), the project of National Natural Science Foundation of China (Grant Nos. 51625702, and 51807135), and the Joint Fund Project of National Natural Science Foundation-State Grid Corporation (Grant no. U1766210). Publisher Copyright: {\textcopyright} 2019 IEEE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 ; Conference date: 29-09-2019 Through 03-10-2019",

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doi = "10.1109/ECCE.2019.8912529",

language = "English",

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Jin, Y, Wang, S, Xiao, Q, Liu, Y, Mu, Y, Ji, Y, Chaudhary, SK & Teodorescu, R 2019, A Novel Harmonic Control Method for MMC Combining Improved Nearest Level Control and Selective Harmonic Elimination method. in 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019., 8912529, IEEE (Institute of Electrical and Electronics Engineers), IEEE Energy Conversion Congress and Exposition, pp. 6368-6375, 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019, Baltimore, United States, 29/09/2019. https://doi.org/10.1109/ECCE.2019.8912529

A Novel Harmonic Control Method for MMC Combining Improved Nearest Level Control and Selective Harmonic Elimination method. / Jin, Yu; Wang, Songda; Xiao, Qian et al.
2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. IEEE (Institute of Electrical and Electronics Engineers), 2019. p. 6368-6375 8912529 (IEEE Energy Conversion Congress and Exposition).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

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AU - Jin, Yu

AU - Wang, Songda

AU - Xiao, Qian

AU - Liu, Yiqi

AU - Mu, Yunfei

AU - Ji, Yanchao

AU - Chaudhary, Sanjay K.

AU - Teodorescu, Remus

N1 - Funding Information: ACKNOWLEDGMENT This paper would like to thank the Chinese Scholarship Council for its foundation for the research in Aalborg university, Denmark. Funding Information: This work is also supported in part by the National Key Research and Development Program of China (Grant no. 2017YFB0903300), the project of National Natural Science Foundation of China (Grant Nos. 51625702, and 51807135), and the Joint Fund Project of National Natural Science Foundation-State Grid Corporation (Grant no. U1766210). Publisher Copyright: © 2019 IEEE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2019/9

Y1 - 2019/9

N2 - This paper proposes a novel harmonic control method combining the improved nearest level control (NLC) and selective harmonic elimination (SHE) method. For the proposed improved NLC, it is applied on the voltage reference of the output terminals instead of the voltage reference of each arm. It has the advantages of higher control accuracy and better harmonic performance especially for the medium voltage application where the number of submodule (SM) is not high. For SHE method, it is applied in this paper to eliminate one certain harmonic by adding an additional signal pulse in each quarter wave. By combination of the two methods, one certain undesired harmonic can be eliminated while maintaining the low switching frequency of NLC. In addition, a novel hysteresis circulating current controller is introduced in this paper, which can control the circulating current, and then effectively regulate the arm energy. Compared with conventional NLC method, the proposed method provides a better harmonic performance and eliminates one certain harmonic at the price of slightly increase of the switching frequency. Moreover, since only one SHE pulse is added in a quarter wave, the additional SHE angles can be directly calculated by equation and do not require other optimal algorithm. Therefore, it can be applied online with variable modulation index. Taking the fifth order harmonic as an example, the simulation results verify the effectiveness of the proposed harmonic control method.

AB - This paper proposes a novel harmonic control method combining the improved nearest level control (NLC) and selective harmonic elimination (SHE) method. For the proposed improved NLC, it is applied on the voltage reference of the output terminals instead of the voltage reference of each arm. It has the advantages of higher control accuracy and better harmonic performance especially for the medium voltage application where the number of submodule (SM) is not high. For SHE method, it is applied in this paper to eliminate one certain harmonic by adding an additional signal pulse in each quarter wave. By combination of the two methods, one certain undesired harmonic can be eliminated while maintaining the low switching frequency of NLC. In addition, a novel hysteresis circulating current controller is introduced in this paper, which can control the circulating current, and then effectively regulate the arm energy. Compared with conventional NLC method, the proposed method provides a better harmonic performance and eliminates one certain harmonic at the price of slightly increase of the switching frequency. Moreover, since only one SHE pulse is added in a quarter wave, the additional SHE angles can be directly calculated by equation and do not require other optimal algorithm. Therefore, it can be applied online with variable modulation index. Taking the fifth order harmonic as an example, the simulation results verify the effectiveness of the proposed harmonic control method.

KW - Circulating current control

KW - Harmonic control

KW - Hysteresis control

KW - Modular multilevel converter (MMC)

KW - Nearest level control (NLC)

KW - Selective harmonic elimination (SHE)

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BT - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

PB - IEEE (Institute of Electrical and Electronics Engineers)

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ER -

Jin Y, Wang S, Xiao Q, Liu Y, Mu Y, Ji Y et al. A Novel Harmonic Control Method for MMC Combining Improved Nearest Level Control and Selective Harmonic Elimination method. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. IEEE (Institute of Electrical and Electronics Engineers). 2019. p. 6368-6375. 8912529. (IEEE Energy Conversion Congress and Exposition). doi: 10.1109/ECCE.2019.8912529

A Novel Harmonic Control Method for MMC Combining Improved Nearest Level Control and Selective Harmonic Elimination method

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Bibliographical note

Keywords

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Advanced Control Strategies for Modular Multilevel Converters

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