{"title":"Modelling and Analysis of a Transfer Field Machine with Displaced Windings","authors":"H. C. Idoko, L. Anih","doi":"10.1109/PowerAfrica.2019.8928800","DOIUrl":null,"url":null,"abstract":"This paper presents the modelling and analysis of a Transfer Field (TF) machine with displaced windings. In this machine, there are two identical polyphase windings in the stator displaced by an arbitrary angle ε. The two component fields revolving in the airgap are of the same pole number and the speed of operation is inversely proportional to the sum of the two pole numbers, that is, half the synchronous speed $\\frac{\\omega }{2}$ of a normal induction motor. There is thus, a close relationship between the self-cascaded induction machine and the TF machine. The effect of displaced angle on performance characteristics of the machine was investigated in both dynamic and steady states. It is shown that the performance characteristics of the machine is optimum when the two polyphase stator windings are displaced by 25 electrical degrees. The maximum output power and starting torque increased by 136.8% and 25.3% respectively.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"5093 4 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 IEEE PES/IAS PowerAfrica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PowerAfrica.2019.8928800","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents the modelling and analysis of a Transfer Field (TF) machine with displaced windings. In this machine, there are two identical polyphase windings in the stator displaced by an arbitrary angle ε. The two component fields revolving in the airgap are of the same pole number and the speed of operation is inversely proportional to the sum of the two pole numbers, that is, half the synchronous speed $\frac{\omega }{2}$ of a normal induction motor. There is thus, a close relationship between the self-cascaded induction machine and the TF machine. The effect of displaced angle on performance characteristics of the machine was investigated in both dynamic and steady states. It is shown that the performance characteristics of the machine is optimum when the two polyphase stator windings are displaced by 25 electrical degrees. The maximum output power and starting torque increased by 136.8% and 25.3% respectively.
本文对具有移位绕组的传递场电机进行了建模和分析。在这种机器中，定子中有两个相同的多相绕组，其位移为任意角度ε。在气隙中旋转的两分量场具有相同的极数，运行速度与两极数之和成反比，即为普通感应电动机同步速度$\frac{\omega }{2}$的一半。因此，自级联感应电机与TF电机之间有着密切的关系。从动态和稳态两方面研究了位移角对机床性能特性的影响。结果表明，当两个多相定子绕组位移25度时，电机的性能特性最优。最大输出功率和起动转矩提高136.8% and 25.3% respectively.
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