{"title":"Negative-Sequence Component Compensation for Railway Power System With Supercapacitor Integrated MMC","authors":"Zhijie Li, Zhongyou Luo, Tianshu Chen, Junyi Tang","doi":"10.1049/ell2.70384","DOIUrl":null,"url":null,"abstract":"<p>This paper presents a coordinated control strategy for a supercapacitor-integrated modular multilevel converter (SC-MMC) to address the negative sequence component in railway traction power systems. The MMC is a single-phase, four-bridge-arm topology with a traction-side sub-module connected to a supercapacitor energy storage device. The operating mode is divided based on the negative sequence compensation principle and locomotive load characteristics. The upper level of the strategy determines the operating modes and calculates the reference power of each port, while the lower level achieves power control and coordinates the switching of operating modes. The case study demonstrates that the system can effectively compensate for the negative sequence of the grid under different locomotive load levels and coordinate the control of the supercapacitor and MMC to participate in the compensation.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70384","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electronics Letters","FirstCategoryId":"5","ListUrlMain":"https://ietresearch.onlinelibrary.wiley.com/doi/10.1049/ell2.70384","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents a coordinated control strategy for a supercapacitor-integrated modular multilevel converter (SC-MMC) to address the negative sequence component in railway traction power systems. The MMC is a single-phase, four-bridge-arm topology with a traction-side sub-module connected to a supercapacitor energy storage device. The operating mode is divided based on the negative sequence compensation principle and locomotive load characteristics. The upper level of the strategy determines the operating modes and calculates the reference power of each port, while the lower level achieves power control and coordinates the switching of operating modes. The case study demonstrates that the system can effectively compensate for the negative sequence of the grid under different locomotive load levels and coordinate the control of the supercapacitor and MMC to participate in the compensation.
期刊介绍：
Electronics Letters is an internationally renowned peer-reviewed rapid-communication journal that publishes short original research papers every two weeks. Its broad and interdisciplinary scope covers the latest developments in all electronic engineering related fields including communication, biomedical, optical and device technologies. Electronics Letters also provides further insight into some of the latest developments through special features and interviews.
Scope
As a journal at the forefront of its field, Electronics Letters publishes papers covering all themes of electronic and electrical engineering. The major themes of the journal are listed below.
Antennas and Propagation
Biomedical and Bioinspired Technologies, Signal Processing and Applications
Control Engineering
Electromagnetism: Theory, Materials and Devices
Electronic Circuits and Systems
Image, Video and Vision Processing and Applications
Information, Computing and Communications
Instrumentation and Measurement
Microwave Technology
Optical Communications
Photonics and Opto-Electronics
Power Electronics, Energy and Sustainability
Radar, Sonar and Navigation
Semiconductor Technology
Signal Processing
MIMO
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