Submodule Level Power Loss Balancing Control for Modular Multilevel Converters

Zhongxu Wang; Huai Wang; Yi Zhang; Frede Blaabjerg

doi:10.1109/ECCE.2018.8557496

Submodule Level Power Loss Balancing Control for Modular Multilevel Converters

Zhongxu Wang
, Huai Wang
, Yi Zhang
, Frede Blaabjerg

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

15 Citations (Scopus)

Abstract

This paper investigates the power loss imbalance in Modular Multilevel Converters (MMCs) with Nearest Level Modulation (NLM) resulting from the low switching frequency operation and the parameter mismatch. The imbalance might pose a challenge to the cooling system design as well as the reliability of the MMC. To address this problem, a submodule-level power loss balancing control (PLBC) is proposed. Compared with the normal control strategy without the thermal balancing, this method is able to decrease the degree of power loss imbalance among submodules (SMs) to at least half without deteriorating the performance of the converter efficiency and the capacitor voltage ripple. The effectiveness of the proposed control is validated by simulations.

Original language	English
Title of host publication	2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	5731-5736
Number of pages	6
ISBN (Electronic)	9781479973118
DOIs	https://doi.org/10.1109/ECCE.2018.8557496
Publication status	Published - 3 Dec 2018
Event	10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States Duration: 23 Sept 2018 → 27 Sept 2018

Publication series

Name	2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Conference

Conference	10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Country/Territory	United States
City	Portland
Period	23/09/18 → 27/09/18

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Modular multilevel converter
Power loss balancing
Power semiconductors

ASJC Scopus subject areas

Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Control and Optimization
Computer Networks and Communications
Hardware and Architecture
Information Systems and Management

More information

10.1109/ECCE.2018.8557496

Cite this

Wang, Z., Wang, H., Zhang, Y., & Blaabjerg, F. (2018). Submodule Level Power Loss Balancing Control for Modular Multilevel Converters. In 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 (pp. 5731-5736). Article 8557496 (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2018.8557496

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title = "Submodule Level Power Loss Balancing Control for Modular Multilevel Converters",

abstract = "This paper investigates the power loss imbalance in Modular Multilevel Converters (MMCs) with Nearest Level Modulation (NLM) resulting from the low switching frequency operation and the parameter mismatch. The imbalance might pose a challenge to the cooling system design as well as the reliability of the MMC. To address this problem, a submodule-level power loss balancing control (PLBC) is proposed. Compared with the normal control strategy without the thermal balancing, this method is able to decrease the degree of power loss imbalance among submodules (SMs) to at least half without deteriorating the performance of the converter efficiency and the capacitor voltage ripple. The effectiveness of the proposed control is validated by simulations.",

keywords = "Modular multilevel converter, Power loss balancing, Power semiconductors",

author = "Zhongxu Wang and Huai Wang and Yi Zhang and Frede Blaabjerg",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 ; Conference date: 23-09-2018 Through 27-09-2018",

year = "2018",

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doi = "10.1109/ECCE.2018.8557496",

language = "English",

series = "2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018",

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Wang, Z, Wang, H, Zhang, Y & Blaabjerg, F 2018, Submodule Level Power Loss Balancing Control for Modular Multilevel Converters. in 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018., 8557496, 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018, Institute of Electrical and Electronics Engineers Inc., pp. 5731-5736, 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018, Portland, United States, 23/09/18. https://doi.org/10.1109/ECCE.2018.8557496

Submodule Level Power Loss Balancing Control for Modular Multilevel Converters. / Wang, Zhongxu; Wang, Huai; Zhang, Yi et al.
2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 5731-5736 8557496 (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018).

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - Submodule Level Power Loss Balancing Control for Modular Multilevel Converters

AU - Wang, Zhongxu

AU - Wang, Huai

AU - Zhang, Yi

AU - Blaabjerg, Frede

PY - 2018/12/3

Y1 - 2018/12/3

N2 - This paper investigates the power loss imbalance in Modular Multilevel Converters (MMCs) with Nearest Level Modulation (NLM) resulting from the low switching frequency operation and the parameter mismatch. The imbalance might pose a challenge to the cooling system design as well as the reliability of the MMC. To address this problem, a submodule-level power loss balancing control (PLBC) is proposed. Compared with the normal control strategy without the thermal balancing, this method is able to decrease the degree of power loss imbalance among submodules (SMs) to at least half without deteriorating the performance of the converter efficiency and the capacitor voltage ripple. The effectiveness of the proposed control is validated by simulations.

AB - This paper investigates the power loss imbalance in Modular Multilevel Converters (MMCs) with Nearest Level Modulation (NLM) resulting from the low switching frequency operation and the parameter mismatch. The imbalance might pose a challenge to the cooling system design as well as the reliability of the MMC. To address this problem, a submodule-level power loss balancing control (PLBC) is proposed. Compared with the normal control strategy without the thermal balancing, this method is able to decrease the degree of power loss imbalance among submodules (SMs) to at least half without deteriorating the performance of the converter efficiency and the capacitor voltage ripple. The effectiveness of the proposed control is validated by simulations.

KW - Modular multilevel converter

KW - Power loss balancing

KW - Power semiconductors

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DO - 10.1109/ECCE.2018.8557496

M3 - Conference article published in proceeding or book

AN - SCOPUS:85060314790

T3 - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

SP - 5731

EP - 5736

BT - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018

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ER -

Submodule Level Power Loss Balancing Control for Modular Multilevel Converters

Abstract

Publication series

Conference

UN SDGs

Keywords

ASJC Scopus subject areas

More information

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