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Số người truy cập: 106,690,474

 A hybrid Fuzzy-PI cascade controller for transient stability improvement in DFIG wind generators
Tác giả hoặc Nhóm tác giả: Quan Minh Duong, Francesco Grimaccia, S. Leva, Kim Hung Le
Nơi đăng: 2016 IEEE International Conference on Fuzzy Systems; Vancouver, Canada; 24-29 July 2016; Số: ISBN: 978-1-5090-0625-0;Từ->đến trang: 1733-1739;Năm: 2016
Lĩnh vực: Kỹ thuật; Loại: Báo cáo; Thể loại: Quốc tế
TÓM TẮT
Doubly-Fed Induction Generator (DFIG) Wind Tur-bine (WT) can be affected by power system faults and requires crowbar protection. When the crowbar is triggered, the rotor is short circuited over the crowbar impedance, the DFIG operates as a Squirrel-cage Induction Generator (SCIG) that tends to drain large amount of reactive power from the grid during fault, potentially causing a voltage drop. In this research, therefore, we propose the use of DFIG based Low-voltage-Ride-Through (LVRT) scheme including crowbar, PSS (Power System Stabi-lizer), RSC (Rotor-side converter) and GSC (Grid-side converter)in order to enhance the transient stability of a grid-connected DFIG. A hybrid cascade Fuzzy-PI based controlling technique is introduced to control the Insulated gate Bipolar Transistor (IGBT) based frequency converter to enhance the transientstability. In the simulations here presented, the proposed control scheme is investigated by comparing the performance of theDFIG system with and without LVRT and damping controlscheme.
ABSTRACT
Doubly-Fed Induction Generator (DFIG) Wind Tur-bine (WT) can be affected by power system faults and requires crowbar protection. When the crowbar is triggered, the rotor is short circuited over the crowbar impedance, the DFIG operates as a Squirrel-cage Induction Generator (SCIG) that tends to drain large amount of reactive power from the grid during fault, potentially causing a voltage drop. In this research, therefore, we propose the use of DFIG based Low-voltage-Ride-Through (LVRT) scheme including crowbar, PSS (Power System Stabi-lizer), RSC (Rotor-side converter) and GSC (Grid-side converter)in order to enhance the transient stability of a grid-connected DFIG. A hybrid cascade Fuzzy-PI based controlling technique is introduced to control the Insulated gate Bipolar Transistor (IGBT) based frequency converter to enhance the transientstability. In the simulations here presented, the proposed control scheme is investigated by comparing the performance of theDFIG system with and without LVRT and damping controlscheme.
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