An Effective Reference Generation Scheme for DFIG With Unbalanced Grid Voltage
作者： M. A. Asha Rani , C. Nagamani , G. Saravana Ilango , A. Karthikeyan
DOI: 10.1109/TSTE.2014.2322672
关键词: Control theory 、 Power (physics) 、 Engineering 、 Direct current 、 Vector control 、 AC power 、 Torque 、 Direct torque control 、 Power factor 、 Voltage
摘要: This paper presents a reference current generation scheme for improved dynamic performance of doubly fed induction generator (DFIG) subjected to unbalanced grid voltage. The power and torque oscillations induced due the unbalance in voltage are minimized using additional compensatory terms currents. focus is on estimating currents control implementation without need dual vector control. Real reactive implemented positive ${\mbi {d - q}}$ frame stator flux-oriented rotor-side converter (RSC) controlled enable effective reduction active power. dc-link oscillation grid-side factor maintained unity (GSC). Unlike previously reported techniques, proposed enables torque, active, power, voltage, all single target. DFIG investigated consideration with Indian Electricity Grid Code (IEGC). Numerical simulations carried out system computer aided design/electromagnetic transients including direct (PSCAD/EMTDC) laboratory 3-hp test setup. results establish that notably enhanced scheme.
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