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  • modelling of v-hz and vector controlled asds in pscad/emtdc for voltage sag studies

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1258
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
    this paper deals with modelling and performance of adjustable speed drives (asds) subjected to voltage disturbances in electric supply. the aim of this study was to develop appropriate models of typical asd and investigate their sensitivity to voltage disturbances under various practical modes of operation and control. accordingly, scalar controlled open and closed loop volts–hertz (v–hz) and vector controlled closed loop asds are modelled in pscad/emtdc environment, and their performance in the presence of voltage disturbances is investigated under typical operating and loading conditions.the drive sensitivity to three-phase, two-phase and single-phase voltage sags and short interruptions was assessed, and the findings are discussed in the paper. depending on the type of drive control, type of voltage sag, applied load torque and adjusted speed, various sensitivity curves were established and analyzed.

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