{"title":"Power-electronic grid supply of AC railway systems","authors":"A. Steimel","doi":"10.1109/OPTIM.2012.6231844","DOIUrl":null,"url":null,"abstract":"The necessarily single-line transfer of electric energy to the moving railway vehicle prohibited the use of the simple three-phase induction motor in traction, until power-electronic converters were mature. The single-phase series-wound commutator motor which had to be used in AC mainline electrification instead enforced a low system frequency, 162/3 Hz in Central Europe, introduced exactly 100 years ago. This had the consequence of a proprietary system of generation and high-voltage transport, separate from the public three-phase mains. Since 1990, power-electronic converters gradually took over the task of generation of the 162/3-Hz current and will replace former single-phase generators and rotary converters. For railways with direct 50-Hz feeding, which have been introduced after 1950, power-electronic converters promise a distinctive improvement, as abolishing the hindering phase insulations in the overhead lines, which enabled to distribute the single-phase traction loads more or less evenly to the three-phase public grid.","PeriodicalId":382406,"journal":{"name":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"48","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/OPTIM.2012.6231844","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 48
Abstract
The necessarily single-line transfer of electric energy to the moving railway vehicle prohibited the use of the simple three-phase induction motor in traction, until power-electronic converters were mature. The single-phase series-wound commutator motor which had to be used in AC mainline electrification instead enforced a low system frequency, 162/3 Hz in Central Europe, introduced exactly 100 years ago. This had the consequence of a proprietary system of generation and high-voltage transport, separate from the public three-phase mains. Since 1990, power-electronic converters gradually took over the task of generation of the 162/3-Hz current and will replace former single-phase generators and rotary converters. For railways with direct 50-Hz feeding, which have been introduced after 1950, power-electronic converters promise a distinctive improvement, as abolishing the hindering phase insulations in the overhead lines, which enabled to distribute the single-phase traction loads more or less evenly to the three-phase public grid.