{"title":"A current source PWM inverter with instantaneous current control capability [AC motors]","authors":"P. Enjeti, P. Ziogas, J. Lindsay","doi":"10.1109/IAS.1988.25171","DOIUrl":null,"url":null,"abstract":"A novel approach for the control of a current-source PWM (pulsewidth-modulated) inverter is proposed to achieve instantaneous current control capability. The scheme provides instantaneous current response in the AC motor by altering the modulation index of the current-source PWM patterns. To achieve this task, optimum programmed PWM patterns with selective elimination of lower-order harmonics in the motor line currents are used. Output filter capacitors are provided to bypass the current harmonics in the inverter output and allow for the instantaneous changes in line currents. This method of control provides sinusoidal output voltages and sinusoidal currents in the AC motor. The scheme guarantees fast response characteristics combined with high-performance steady-state behavior. A design procedure for the current-source PWM and selection of programmed PWM current patterns for a variable-speed situation are illustrated. Selected results are verified experimentally.<<ETX>>","PeriodicalId":274766,"journal":{"name":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IAS.1988.25171","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 11
Abstract
A novel approach for the control of a current-source PWM (pulsewidth-modulated) inverter is proposed to achieve instantaneous current control capability. The scheme provides instantaneous current response in the AC motor by altering the modulation index of the current-source PWM patterns. To achieve this task, optimum programmed PWM patterns with selective elimination of lower-order harmonics in the motor line currents are used. Output filter capacitors are provided to bypass the current harmonics in the inverter output and allow for the instantaneous changes in line currents. This method of control provides sinusoidal output voltages and sinusoidal currents in the AC motor. The scheme guarantees fast response characteristics combined with high-performance steady-state behavior. A design procedure for the current-source PWM and selection of programmed PWM current patterns for a variable-speed situation are illustrated. Selected results are verified experimentally.<>
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