کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7115541 | 1461138 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
VSC-HVDC system robust stability analysis based on a modified mixed small gain and passivity theorem
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: VSC-HVDC system robust stability analysis based on a modified mixed small gain and passivity theorem VSC-HVDC system robust stability analysis based on a modified mixed small gain and passivity theorem](/preview/png/7115541.png)
چکیده انگلیسی
In a VSC-HVDC system, when the input power to the converter is controlled to a positive constant, the converter acts a differential negative resistance - Po/i20, which may cause instability in case of a connected weak AC-grid. In order to analyze the robust stability of such a system, a modified mixed small gain and passivity theorem is proposed, which shows that the negative feedback interconnection of two linear time invariant stable subsystems (converter admittance and AC-grid impedance) is input to output stable if in certain frequency bands, both subsystems are passive and at least one of them is strictly passive; at the remaining frequency bands, the loop gain is to be strictly less than one. Under different AC-grid topologies, the stability sufficient conditions with respect to the AC-grid inductance are studied. It shows that for AC-grid consists of series RgLg-circuit, an introduced series capacitor can improve the system robustness but not for the shunt capacitor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: IFAC-PapersOnLine - Volume 50, Issue 1, July 2017, Pages 13-18
Journal: IFAC-PapersOnLine - Volume 50, Issue 1, July 2017, Pages 13-18
نویسندگان
Y. Song, C. Breitholtz,