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Carrier Reconfiguration for Improving Output Voltage Quality and Balancing Capacitor Voltages in MMDTC-Based STATCOM.

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Title: Carrier Reconfiguration for Improving Output Voltage Quality and Balancing Capacitor Voltages in MMDTC-Based STATCOM.
Authors: Xie, Fengxiang1 (AUTHOR), Qi, Yuantang1,2 (AUTHOR), Ji, Yongdong1,3 (AUTHOR), Ji, Xiaofan1,2 (AUTHOR), Cui, Xiangzheng2,3 (AUTHOR), Liu, Shuo3 (AUTHOR), Niu, Decun3 (AUTHOR) niudecun@qust.edu.cn
Source: Energies (19961073). Aug2025, Vol. 18 Issue 15, p4150. 21p.
Subjects: Pulse modulation, Converters (Electronics), Flexible AC transmission systems, Empirical research
Abstract: For Modular Multilevel DC-Link T-Type Converter (MMDTC)-based STATCOMs, under identical operating conditions, the submodule (SM) capacitor voltage ripple is inversely proportional to its capacitance value. A configuration with a lower capacitance will inevitably result in significant capacitor voltage ripples. During the PWM modulation process, these ripples can lead to distortions in the output voltage waveform. To address this issue, this paper proposes an innovative carrier reconfiguration method that not only compensates for the output voltage pulse deviation caused by SM capacitor voltage ripples but also achieves effective balancing of the SM capacitor voltages. Finally, the validity and performance of the proposed carrier reconfiguration method are verified through both simulations and experimental results. [ABSTRACT FROM AUTHOR]
Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 187312802
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Carrier Reconfiguration for Improving Output Voltage Quality and Balancing Capacitor Voltages in MMDTC-Based STATCOM.
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  Data: <searchLink fieldCode="AR" term="%22Xie%2C+Fengxiang%22">Xie, Fengxiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qi%2C+Yuantang%22">Qi, Yuantang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ji%2C+Yongdong%22">Ji, Yongdong</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ji%2C+Xiaofan%22">Ji, Xiaofan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cui%2C+Xiangzheng%22">Cui, Xiangzheng</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Shuo%22">Liu, Shuo</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Niu%2C+Decun%22">Niu, Decun</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> niudecun@qust.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Aug2025, Vol. 18 Issue 15, p4150. 21p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Pulse+modulation%22">Pulse modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Converters+%28Electronics%29%22">Converters (Electronics)</searchLink><br /><searchLink fieldCode="DE" term="%22Flexible+AC+transmission+systems%22">Flexible AC transmission systems</searchLink><br /><searchLink fieldCode="DE" term="%22Empirical+research%22">Empirical research</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: For Modular Multilevel DC-Link T-Type Converter (MMDTC)-based STATCOMs, under identical operating conditions, the submodule (SM) capacitor voltage ripple is inversely proportional to its capacitance value. A configuration with a lower capacitance will inevitably result in significant capacitor voltage ripples. During the PWM modulation process, these ripples can lead to distortions in the output voltage waveform. To address this issue, this paper proposes an innovative carrier reconfiguration method that not only compensates for the output voltage pulse deviation caused by SM capacitor voltage ripples but also achieves effective balancing of the SM capacitor voltages. Finally, the validity and performance of the proposed carrier reconfiguration method are verified through both simulations and experimental results. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/en18154150
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        Text: English
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      – SubjectFull: Flexible AC transmission systems
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              M: 08
              Text: Aug2025
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