{"title":"PWM驱动电机电功率计算中的信号带宽评估","authors":"D. Lindenthaler","doi":"10.1109/CPEM.2014.6898541","DOIUrl":null,"url":null,"abstract":"This investigation contributes to the power calculation of electric motors which are driven by pulse-width-modulation (PWM). In digital measurement systems, PWM signals have an undesired property: their spectra are broadly extended. The fulfilment of the sampling theorem requires the band limitation of the signals, which in turn influences the result of the power calculation. This paper presents a method for the calculation of the band limitation error for PWM signals and analyses the magnitude of this error in a numerical study.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Signal-bandwidth evaluation for electric power calculation in PWM driven motors\",\"authors\":\"D. Lindenthaler\",\"doi\":\"10.1109/CPEM.2014.6898541\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This investigation contributes to the power calculation of electric motors which are driven by pulse-width-modulation (PWM). In digital measurement systems, PWM signals have an undesired property: their spectra are broadly extended. The fulfilment of the sampling theorem requires the band limitation of the signals, which in turn influences the result of the power calculation. This paper presents a method for the calculation of the band limitation error for PWM signals and analyses the magnitude of this error in a numerical study.\",\"PeriodicalId\":256575,\"journal\":{\"name\":\"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-10-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CPEM.2014.6898541\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CPEM.2014.6898541","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Signal-bandwidth evaluation for electric power calculation in PWM driven motors
This investigation contributes to the power calculation of electric motors which are driven by pulse-width-modulation (PWM). In digital measurement systems, PWM signals have an undesired property: their spectra are broadly extended. The fulfilment of the sampling theorem requires the band limitation of the signals, which in turn influences the result of the power calculation. This paper presents a method for the calculation of the band limitation error for PWM signals and analyses the magnitude of this error in a numerical study.
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