Qianhong Chen, Lang Mao, X. Ren, X. Ruan, Leilei Jiang
{"title":"Research of the current-injection-based P-type 12-pulse ATRU","authors":"Qianhong Chen, Lang Mao, X. Ren, X. Ruan, Leilei Jiang","doi":"10.1109/IPEMC.2012.6258841","DOIUrl":null,"url":null,"abstract":"P-type 12-pulse auto-transformer rectifier unit (ATRU) is a very attractive harmonic solution in aviation situation for its lower volt-ampere rating of transformer compared with other multi-pulse methods. However, the input current THD of 12-pulse ATRU is about 15% larger than 10% THD requirement by the related standards. Current-injection method is an effective harmonic mitigation method for 12-pulse rectifiers. This paper analyzed the input current waveform based on triangle current-injection method for P-type 12-pulse ATRU. It also points that the key to get the required injection current taking use of the voltage difference across interphase reactors is to emulate a resistor. The optimum equivalent current injection resistance is derived in this paper. And a novel harmonic injection scheme based on DCM flyback converter is proposed and analyzed. Experimental results from three 4kW P-type 12-pulse ATRU testify the effectiveness of the theoretical analysis and the proposed harmonic injection method.","PeriodicalId":236136,"journal":{"name":"Proceedings of The 7th International Power Electronics and Motion Control Conference","volume":"1991 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of The 7th International Power Electronics and Motion Control Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IPEMC.2012.6258841","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
P-type 12-pulse auto-transformer rectifier unit (ATRU) is a very attractive harmonic solution in aviation situation for its lower volt-ampere rating of transformer compared with other multi-pulse methods. However, the input current THD of 12-pulse ATRU is about 15% larger than 10% THD requirement by the related standards. Current-injection method is an effective harmonic mitigation method for 12-pulse rectifiers. This paper analyzed the input current waveform based on triangle current-injection method for P-type 12-pulse ATRU. It also points that the key to get the required injection current taking use of the voltage difference across interphase reactors is to emulate a resistor. The optimum equivalent current injection resistance is derived in this paper. And a novel harmonic injection scheme based on DCM flyback converter is proposed and analyzed. Experimental results from three 4kW P-type 12-pulse ATRU testify the effectiveness of the theoretical analysis and the proposed harmonic injection method.
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