{"title":"在变换器应用中具有两个三相绕组的感应电机","authors":"J. Hylander, S. von Zweygbergk","doi":"10.1109/MELCON.1989.50010","DOIUrl":null,"url":null,"abstract":"A method for reducing the influence of current harmonics in variable-speed drives on electrodynamic torque has been analyzed with experiments and calculations. An 11 kW 380 V induction motor was rewound with two three-phase systems displaced 30 electrical degrees. Measurements were made with quasi-square-wave supply generated by two voltage source inverters. The induction machine was coupled via a torque transducer to a DC machine. The voltage, two phase currents, and the torque were measured with a transient recorder connected to a computer. In the computer the data were processed with a fast Fourier transform program in order to determine the harmonics. Calculations were also made on a transient computer model of the drive. It is shown that, by designing an induction machine with an extra set of three-phase winding, displaced 30 electrical degrees from the ordinary winding, the influence of the 5, 7, 17, 19, . . . current harmonics on the torque is eliminated. Only the 11, 13, 23, 25, . . . harmonics still produce pulsating torques. The drawback is the extra inverter and winding.<<ETX>>","PeriodicalId":380214,"journal":{"name":"Proceedings. Electrotechnical Conference Integrating Research, Industry and Education in Energy and Communication Engineering',","volume":"153 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1989-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Induction machines with two three-phase windings in convertor applications\",\"authors\":\"J. Hylander, S. von Zweygbergk\",\"doi\":\"10.1109/MELCON.1989.50010\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A method for reducing the influence of current harmonics in variable-speed drives on electrodynamic torque has been analyzed with experiments and calculations. An 11 kW 380 V induction motor was rewound with two three-phase systems displaced 30 electrical degrees. Measurements were made with quasi-square-wave supply generated by two voltage source inverters. The induction machine was coupled via a torque transducer to a DC machine. The voltage, two phase currents, and the torque were measured with a transient recorder connected to a computer. In the computer the data were processed with a fast Fourier transform program in order to determine the harmonics. Calculations were also made on a transient computer model of the drive. It is shown that, by designing an induction machine with an extra set of three-phase winding, displaced 30 electrical degrees from the ordinary winding, the influence of the 5, 7, 17, 19, . . . current harmonics on the torque is eliminated. Only the 11, 13, 23, 25, . . . harmonics still produce pulsating torques. The drawback is the extra inverter and winding.<<ETX>>\",\"PeriodicalId\":380214,\"journal\":{\"name\":\"Proceedings. Electrotechnical Conference Integrating Research, Industry and Education in Energy and Communication Engineering',\",\"volume\":\"153 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1989-04-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings. Electrotechnical Conference Integrating Research, Industry and Education in Energy and Communication Engineering',\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/MELCON.1989.50010\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings. Electrotechnical Conference Integrating Research, Industry and Education in Energy and Communication Engineering',","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MELCON.1989.50010","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Induction machines with two three-phase windings in convertor applications
A method for reducing the influence of current harmonics in variable-speed drives on electrodynamic torque has been analyzed with experiments and calculations. An 11 kW 380 V induction motor was rewound with two three-phase systems displaced 30 electrical degrees. Measurements were made with quasi-square-wave supply generated by two voltage source inverters. The induction machine was coupled via a torque transducer to a DC machine. The voltage, two phase currents, and the torque were measured with a transient recorder connected to a computer. In the computer the data were processed with a fast Fourier transform program in order to determine the harmonics. Calculations were also made on a transient computer model of the drive. It is shown that, by designing an induction machine with an extra set of three-phase winding, displaced 30 electrical degrees from the ordinary winding, the influence of the 5, 7, 17, 19, . . . current harmonics on the torque is eliminated. Only the 11, 13, 23, 25, . . . harmonics still produce pulsating torques. The drawback is the extra inverter and winding.<>
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