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

Fengxiang Xie, Yuantang Qi, Yongdong Ji, Xiaofan Ji, Xiangzheng Cui, Shuo Liu and Decun Niu ()
Additional contact information
Fengxiang Xie: Guoneng (Gonghe) New Energy Development Co., Ltd., Hainan Tibetan Autonomous Prefecture 813000, China
Yuantang Qi: Guoneng (Gonghe) New Energy Development Co., Ltd., Hainan Tibetan Autonomous Prefecture 813000, China
Yongdong Ji: Guoneng (Gonghe) New Energy Development Co., Ltd., Hainan Tibetan Autonomous Prefecture 813000, China
Xiaofan Ji: National Institute of Clean-and-Low-Carbon Energy, Beijing 102209, China
Xiangzheng Cui: School of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266061, China
Shuo Liu: School of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266061, China
Decun Niu: School of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266061, China

Energies, 2025, vol. 18, issue 15, 1-21

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.

Keywords: STATCOM; MMDTC; carrier reconfiguration; capacitor voltage ripple (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/18/15/4150/pdf (application/pdf)
https://www.mdpi.com/1996-1073/18/15/4150/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:18:y:2025:i:15:p:4150-:d:1717900

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().