Shun Wang;Cen Tang;Siyang Liu;Xiaoqi Cao;Jianglin Nie;Jiangpeng Yang;Zeliang Shu
{"title":"Improvement of Low-Switching-Frequency Rectifier With Hybrid Cascaded H-Bridge Multilevel Cell","authors":"Shun Wang;Cen Tang;Siyang Liu;Xiaoqi Cao;Jianglin Nie;Jiangpeng Yang;Zeliang Shu","doi":"10.1109/TPEL.2025.3541073","DOIUrl":null,"url":null,"abstract":"Due to device losses and heat dissipation, single-phase rectifiers in high-speed railways are operated at low-switching frequencies. Harmonic resonance in the traction power supply substation is mostly caused by the low-frequency switching harmonics. In this article, a hybrid cascaded H-bridge multilevel rectifier is proposed to improve the overall performance by cascading a high-frequency switching cell. The added cell operates at full-range no-load with half the dc voltage of the low-frequency cell. The proposed asynchronous space vector pulsewidth modulation (SVPWM) provides equivalent switching frequencies in the low-voltage cell (LV <inline-formula><tex-math>$\\_$</tex-math></inline-formula> cell) while maintaining power frequency in the high-voltage cell. The limitation of no redundant vectors, the LV <inline-formula><tex-math>$\\_$</tex-math></inline-formula> cell's no-load operation, and the different voltage set values make voltage regulation challenging. An enhanced control strategy is proposed to maintain a stable voltage with wonderful dynamic performance. Simulation and experimental results show that better harmonic performance and lower power losses are achieved.","PeriodicalId":13267,"journal":{"name":"IEEE Transactions on Power Electronics","volume":"40 6","pages":"8253-8263"},"PeriodicalIF":6.5000,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Power Electronics","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10882963/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Due to device losses and heat dissipation, single-phase rectifiers in high-speed railways are operated at low-switching frequencies. Harmonic resonance in the traction power supply substation is mostly caused by the low-frequency switching harmonics. In this article, a hybrid cascaded H-bridge multilevel rectifier is proposed to improve the overall performance by cascading a high-frequency switching cell. The added cell operates at full-range no-load with half the dc voltage of the low-frequency cell. The proposed asynchronous space vector pulsewidth modulation (SVPWM) provides equivalent switching frequencies in the low-voltage cell (LV $\_$ cell) while maintaining power frequency in the high-voltage cell. The limitation of no redundant vectors, the LV $\_$ cell's no-load operation, and the different voltage set values make voltage regulation challenging. An enhanced control strategy is proposed to maintain a stable voltage with wonderful dynamic performance. Simulation and experimental results show that better harmonic performance and lower power losses are achieved.
期刊介绍：
The IEEE Transactions on Power Electronics journal covers all issues of widespread or generic interest to engineers who work in the field of power electronics. The Journal editors will enforce standards and a review policy equivalent to the IEEE Transactions, and only papers of high technical quality will be accepted. Papers which treat new and novel device, circuit or system issues which are of generic interest to power electronics engineers are published. Papers which are not within the scope of this Journal will be forwarded to the appropriate IEEE Journal or Transactions editors. Examples of papers which would be more appropriately published in other Journals or Transactions include: 1) Papers describing semiconductor or electron device physics. These papers would be more appropriate for the IEEE Transactions on Electron Devices. 2) Papers describing applications in specific areas: e.g., industry, instrumentation, utility power systems, aerospace, industrial electronics, etc. These papers would be more appropriate for the Transactions of the Society which is concerned with these applications. 3) Papers describing magnetic materials and magnetic device physics. These papers would be more appropriate for the IEEE Transactions on Magnetics. 4) Papers on machine theory. These papers would be more appropriate for the IEEE Transactions on Power Systems. While original papers of significant technical content will comprise the major portion of the Journal, tutorial papers and papers of historical value are also reviewed for publication.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
