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Reliability Analysis of MMCs Considering Submodule Designs with Individual or Series-Operated IGBTs
Open accessAbstract
The half-bridge-based modular multilevel converter (MMC) has emerged as the favored converter topology for voltage-source HVDC applications. The submodules within the converter can be constructed with either individual insulated-gate bipolar transistor (IGBT) modules or with series-connected IGBTs, which allows for different redundancy strategies to be employed. The main contribution of this paper is that an analytical method was proposed to analyze the reliability of MMCs with the consideration of submodule arrangements and redundancy strategies. Based on the analytical method, the relative merits of two approaches to adding redundancy, and variants created by varying the submodule voltage, are assessed in terms of overall converter reliability. Case studies were conducted to compare the reliability characteristics of converters constructed using the two submodule topologies. It is found that reliability of the MMC with series-connected IGBTs is higher for the first few years but then decreases rapidly. By assigning a reduced nominal voltage to the series valve submodule upon IGBT module failure, the need to install redundant submodules is greatly reduced.
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“It is found that the reliability of the MMC with series-connected IGBTs is higher for the first few years but then decreases rapidly.”
From Modular Multilevel Converters: Recent Achievements and Challenges (2021) · cites this paper as [137]
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“By assigning a reduced nominal voltage to the series valve submodule upon IGBT module failure, the need to install redundant submodules is greatly reduced.”
From Modular Multilevel Converters: Recent Achievements and Challenges (2021) · cites this paper as [137]
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Cited by
Sorted by citations
Modular Multilevel Converters: Recent Achievements and Challenges
Perez, M. A., Ceballos, S., Konstantinou, G., Pou, J., & Aguilera, R. P. (2021) · IEEE Open Journal of the Industrial Electronics Society · doi:10.1109/ojies.2021.3060791 · Cited by 327
“constructed using the two-submodule configurations [137].”
Reliability Modeling of MMCs Considering Correlations of the Requisite and Redundant Submodules
Xu, J., Jing, H., & Zhao, C. (2018) · IEEE Transactions on Power Delivery · doi:10.1109/tpwrd.2017.2757607 · Cited by 53
The Predictive Closed-Loop Averaging Control of MMC Phase-Unit Losses Under Unbalanced Conditions
Xu, J., Yu, Y., & Zhao, C. (2019) · IEEE Transactions on Power Delivery · doi:10.1109/tpwrd.2018.2868772 · Cited by 14
Metadata
- Authors
- Guo, J., Liang, J., Zhang, X., Judge, P. D., Wang, X., & Green, T. C.
- Affiliations
- Xi'an Jiaotong University (CN)
- Cardiff University (GB)
- Imperial College London (GB)
- Venue
- IEEE Transactions on Power Delivery
- Published
- 2017-04
- Volume
- 32
- Issue
- 2
- Pages
- 666-677
- ISSN
- 0885-8977 (ISSN-L)
- 1937-4208
- OpenAlex
- W2405401061
- Cited by
- 79
- References
- 0
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 10 · 2023: 11 · 2022: 9 · 2021: 11 · 2020: 10 · 2019: 11 · 2018: 6 · 2017: 5
- FWCI
- 3.38
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- IEEE Transactions on Power Delivery (publishedVersion, cc-by)
- ORCA Online Research @Cardiff (Cardiff University) (acceptedVersion)
- Aston Publications Explorer (Aston University) (acceptedVersion, cc-by)
- Spiral (Imperial College London) (submittedVersion, cc-by)
- Funders
- National Natural Science Foundation of China (51261130471)
- EPSRC (EP/K006312/1, EP/I031707/1, EP/I013636/1)
- China Scholarship Council ((201406280115))
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › HVDC Systems and Fault Protection
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Multilevel Inverters and Converters
- Physical Sciences › Engineering › Safety, Risk, Reliability and Quality › Reliability and Maintenance Optimization
- Keywords
- modular multilevel converter, half-bridge submodules, series-connected IGBTs, converter reliability, failure analysis
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