Dual-Circulant Modulation for Modular Multilevel DC/DC Converters With Inherent Balance Capability

Jinpei Duan; Donglai Zhang; Xiongfei Wang; Runan Gu; Chao Wang; Zhigang Liu

doi:10.1109/TPEL.2023.3241772

Dual-Circulant Modulation for Modular Multilevel DC/DC Converters With Inherent Balance Capability

Jinpei Duan
, Donglai Zhang^*
, Xiongfei Wang
, Runan Gu
, Chao Wang
, Zhigang Liu

^*Corresponding author for this work

Harbin Institute of Technology Shenzhen
Peng Cheng Laboratory
KTH Royal Institute of Technology
China Aerospace Science and Technology Corporation

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

4 Scopus citations

Abstract

Modular multilevel dc/dc converters (MMDC) have emerged recently for medium-voltage dc applications. Under single-circulant modulation, the submodule (SM) capacitor voltages in MMDC are found to be evenly divided only at some specific modulation coefficients. To obtain the inherent balance capability under all modulation coefficients and expand the application range of circulant modulation, a simple dual-circulant modulation is proposed in this letter. On the basis of single-circulant modulation, the self-balancing of the SM capacitor voltages is realized by using the additional switching patterns generated by a simple circulant permutation method. The theoretical analysis of the proposed method is presented, and the inherent balance capability of MMDC under the dual-circulant modulation method is verified by experiments.

Original language	English
Pages (from-to)	7958-7963
Number of pages	6
Journal	IEEE Transactions on Power Electronics
Volume	38
Issue number	7
DOIs	https://doi.org/10.1109/TPEL.2023.3241772
State	Published - 1 Jul 2023
Externally published	Yes

Keywords

Dual-circulant modulation
inherent balance capability
medium-voltage
modular multilevel dc/dc converters (MMDC)

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10.1109/TPEL.2023.3241772

Cite this

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title = "Dual-Circulant Modulation for Modular Multilevel DC/DC Converters With Inherent Balance Capability",

abstract = "Modular multilevel dc/dc converters (MMDC) have emerged recently for medium-voltage dc applications. Under single-circulant modulation, the submodule (SM) capacitor voltages in MMDC are found to be evenly divided only at some specific modulation coefficients. To obtain the inherent balance capability under all modulation coefficients and expand the application range of circulant modulation, a simple dual-circulant modulation is proposed in this letter. On the basis of single-circulant modulation, the self-balancing of the SM capacitor voltages is realized by using the additional switching patterns generated by a simple circulant permutation method. The theoretical analysis of the proposed method is presented, and the inherent balance capability of MMDC under the dual-circulant modulation method is verified by experiments.",

keywords = "Dual-circulant modulation, inherent balance capability, medium-voltage, modular multilevel dc/dc converters (MMDC)",

author = "Jinpei Duan and Donglai Zhang and Xiongfei Wang and Runan Gu and Chao Wang and Zhigang Liu",

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doi = "10.1109/TPEL.2023.3241772",

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T1 - Dual-Circulant Modulation for Modular Multilevel DC/DC Converters With Inherent Balance Capability

AU - Duan, Jinpei

AU - Zhang, Donglai

AU - Wang, Xiongfei

AU - Gu, Runan

AU - Wang, Chao

AU - Liu, Zhigang

PY - 2023/7/1

Y1 - 2023/7/1

N2 - Modular multilevel dc/dc converters (MMDC) have emerged recently for medium-voltage dc applications. Under single-circulant modulation, the submodule (SM) capacitor voltages in MMDC are found to be evenly divided only at some specific modulation coefficients. To obtain the inherent balance capability under all modulation coefficients and expand the application range of circulant modulation, a simple dual-circulant modulation is proposed in this letter. On the basis of single-circulant modulation, the self-balancing of the SM capacitor voltages is realized by using the additional switching patterns generated by a simple circulant permutation method. The theoretical analysis of the proposed method is presented, and the inherent balance capability of MMDC under the dual-circulant modulation method is verified by experiments.

AB - Modular multilevel dc/dc converters (MMDC) have emerged recently for medium-voltage dc applications. Under single-circulant modulation, the submodule (SM) capacitor voltages in MMDC are found to be evenly divided only at some specific modulation coefficients. To obtain the inherent balance capability under all modulation coefficients and expand the application range of circulant modulation, a simple dual-circulant modulation is proposed in this letter. On the basis of single-circulant modulation, the self-balancing of the SM capacitor voltages is realized by using the additional switching patterns generated by a simple circulant permutation method. The theoretical analysis of the proposed method is presented, and the inherent balance capability of MMDC under the dual-circulant modulation method is verified by experiments.

KW - Dual-circulant modulation

KW - inherent balance capability

KW - medium-voltage

KW - modular multilevel dc/dc converters (MMDC)

UR - https://www.scopus.com/pages/publications/85148477920

U2 - 10.1109/TPEL.2023.3241772

DO - 10.1109/TPEL.2023.3241772

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JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

IS - 7

ER -

Dual-Circulant Modulation for Modular Multilevel DC/DC Converters With Inherent Balance Capability

Abstract

Keywords

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