{"title":"A low distortion 3-phase rectifier using a resonant-mode Y-connected thyristor network","authors":"J. Salmon, E. Nowicki","doi":"10.1109/CCECE.1995.526300","DOIUrl":null,"url":null,"abstract":"This paper describes the operation of a resonant three-phase Y-connected thyristor network, \"3/spl theta/ SCR Y-switch\", that can be used to lower the line-current harmonic content of a three-phase diode bridge rectifier using AC-line inductors. The current shaping action of the 3/spl theta/ SCR Y-switch results in close to unity fundamental power factor with an input current harmonic distortion of less than 10% and close to 5%. The resonant-mode action of the 3/spl theta/ SCR Y-switch has attractive electrical characteristics in terms of a very low per-unit current rating; self-commutation of the thyristors; zero current turn-on and zero voltage turn off; 120 Hz switching frequency. These characteristics make the power converter inexpensive, reliable and useful in medium power applications such as industrial drives for controlling the speed of three-phase induction motors.","PeriodicalId":158581,"journal":{"name":"Proceedings 1995 Canadian Conference on Electrical and Computer Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1995-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings 1995 Canadian Conference on Electrical and Computer Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CCECE.1995.526300","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
This paper describes the operation of a resonant three-phase Y-connected thyristor network, "3/spl theta/ SCR Y-switch", that can be used to lower the line-current harmonic content of a three-phase diode bridge rectifier using AC-line inductors. The current shaping action of the 3/spl theta/ SCR Y-switch results in close to unity fundamental power factor with an input current harmonic distortion of less than 10% and close to 5%. The resonant-mode action of the 3/spl theta/ SCR Y-switch has attractive electrical characteristics in terms of a very low per-unit current rating; self-commutation of the thyristors; zero current turn-on and zero voltage turn off; 120 Hz switching frequency. These characteristics make the power converter inexpensive, reliable and useful in medium power applications such as industrial drives for controlling the speed of three-phase induction motors.
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