R. Bojoi, M. C. Caponet, G. Grieco, M. Lazzari, A. Tenconi, F. Profumo
{"title":"Computation and measurements of the DC link current in six-phase voltage source PWM inverters for AC motor drives","authors":"R. Bojoi, M. C. Caponet, G. Grieco, M. Lazzari, A. Tenconi, F. Profumo","doi":"10.1109/PCC.2002.998097","DOIUrl":null,"url":null,"abstract":"Multiphase AC motor drives (with more than three phases) have some potential advantages as widely discussed in the literature. The DC-link capacitor size depends on the current RMS value, in particular, if the drive is supplied by a DC source, the current requested to the capacitor is basically determined by inverter input current AC component. The analytical computation of the capacitor current RMS value in the DC link of a voltage source PWM inverter, driving an induction motor, is extended from the common 3-phase systems to multiphase systems in general. In particular the six-phase-double star case has been analyzed in detail. The consistency of the analytical results have been tested through digital simulations. Furthermore, a 6-phase voltage source PWM inverter prototype has been designed and built to supply a multiphase induction motor drive: the experimental results confirm the validity of the mathematical/simulation approach.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"18","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PCC.2002.998097","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 18
Abstract
Multiphase AC motor drives (with more than three phases) have some potential advantages as widely discussed in the literature. The DC-link capacitor size depends on the current RMS value, in particular, if the drive is supplied by a DC source, the current requested to the capacitor is basically determined by inverter input current AC component. The analytical computation of the capacitor current RMS value in the DC link of a voltage source PWM inverter, driving an induction motor, is extended from the common 3-phase systems to multiphase systems in general. In particular the six-phase-double star case has been analyzed in detail. The consistency of the analytical results have been tested through digital simulations. Furthermore, a 6-phase voltage source PWM inverter prototype has been designed and built to supply a multiphase induction motor drive: the experimental results confirm the validity of the mathematical/simulation approach.
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