کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6859656 1438728 2015 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Small-signal modeling and parametric sensitivity of a virtual synchronous machine in islanded operation
ترجمه فارسی عنوان
مدل سازی سیگنال و حساسیت پارامتری یک دستگاه همزمان در عملیات جزر و مد
کلمات کلیدی
کنترل قدرت الکترونیکی، پایداری سیگنال کوچک، عملیات مستقل، ماشین مجازی مجازی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر هوش مصنوعی
چکیده انگلیسی
The concept of Virtual Synchronous Machines (VSMs) is emerging as a flexible approach for controlling power electronic converters in grid-connected as well as in stand-alone or microgrid applications. Several VSM implementations have been proposed, with the emulation of inertia and damping of a traditional Synchronous Machine (SM) as their common feature. This paper investigates a VSM implementation based on a Voltage Source Converter (VSC), where a virtual swing equation provides the phase orientation of cascaded voltage and current controllers in a synchronous reference frame. The control system also includes a virtual impedance and an outer loop frequency droop controller which is functionally equivalent to the governor of a traditional SM. The inherent capability of the investigated VSM implementation to operate in both grid-connected and islanded mode is demonstrated by numerical simulations. Then, a linearized small-signal model of the VSM operated in islanded mode while feeding a local load is developed and verified by comparing its dynamic response to the time-domain simulation of a nonlinear system model. Finally, this small-signal model is applied to identify the dominant modes of the system and to investigate their parametric sensitivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Electrical Power & Energy Systems - Volume 72, November 2015, Pages 3-15
نویسندگان
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