{"title":"A Hybrid Cascaded H-Bridge Converter for Poloidal Magnets of Tokamaks","authors":"Zichong Song;Yi Tan;Shouzhi Wang;Binbin Wang;Tingzhi Chang;Rui Chen","doi":"10.1109/TPS.2024.3443257","DOIUrl":null,"url":null,"abstract":"The high-performance control of tokamak plasmas requires the poloidal magnet power supply (PS) to have a large current output at the 10-kA class, a current slew rate at the 1-kA/ms class, and as low ripple as possible in both voltage and current. This article presents a modular multilevel converter composed of two cascaded H-bridges, powered separately by electrolytic capacitors and supercapacitors (SCs). A controller that could take advantage of different capacitors is developed. Simulation and test are carried out on spherical tokamak SUNIST-2. The results show that it meets the above requirements well.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"52 9","pages":"3719-3724"},"PeriodicalIF":1.3000,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Plasma Science","FirstCategoryId":"101","ListUrlMain":"https://ieeexplore.ieee.org/document/10643750/","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, FLUIDS & PLASMAS","Score":null,"Total":0}
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Abstract
The high-performance control of tokamak plasmas requires the poloidal magnet power supply (PS) to have a large current output at the 10-kA class, a current slew rate at the 1-kA/ms class, and as low ripple as possible in both voltage and current. This article presents a modular multilevel converter composed of two cascaded H-bridges, powered separately by electrolytic capacitors and supercapacitors (SCs). A controller that could take advantage of different capacitors is developed. Simulation and test are carried out on spherical tokamak SUNIST-2. The results show that it meets the above requirements well.
期刊介绍：
The scope covers all aspects of the theory and application of plasma science. It includes the following areas: magnetohydrodynamics; thermionics and plasma diodes; basic plasma phenomena; gaseous electronics; microwave/plasma interaction; electron, ion, and plasma sources; space plasmas; intense electron and ion beams; laser-plasma interactions; plasma diagnostics; plasma chemistry and processing; solid-state plasmas; plasma heating; plasma for controlled fusion research; high energy density plasmas; industrial/commercial applications of plasma physics; plasma waves and instabilities; and high power microwave and submillimeter wave generation.
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