NDLI: Complex transfer function-based sequence domain impedance model of doubly fed induction generator

Content Provider	IET Digital Library
Author	Chen, Liang Nian, Heng Xu, Yunyang
Abstract	The impedance-based analysis is widely used to study stability problem between wind turbine system and grid network. Stationary sequence domain impedance has advantages over synchronous dq domain impedance due to its easy measurement in practical application. However, there is frequency coupling effect in sequence domain impedance, and a 2×2 impedance matrix is needed which makes the system be multiple-input–multiple-output system, which makes stability study and controller tuning much more complex compared with single-input–single-output (SISO) system. In this study, impedance model of doubly fed induction generator (DFIG) in sequence domain considering frequency coupling effect is derived based on the complex vector modelling method, which can obtain the straightforward block diagram representation of DFIG impedance. On the basis of the proposed model, the interaction of DFIG and different kinds of grid impedances are studied. Gershgorin theorem is applied to study the fidelity of SISO impedance model in stability analysis. Finally, the proposed impedance-based analysis is verified through simulation.
Starting Page	67
Ending Page	77
Page Count	11
ISSN	17521416
Volume Number	13
e-ISSN	17521424
Issue Number	Issue 1, Jan (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/13/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2018.5330
Journal	IET Renewable Power Generation
Publisher Date	2018-09-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	2×2 Impedance Matrix Algebra Asynchronous Generator Asynchronous Machine Complex Transfer Function-based Sequence Domain Impedance Model Complex Vector Modelling Method Control of Electric Power System Control System Analysis Controller Tuning DFIG Impedance Doubly Fed Induction Generator Dq Domain Impedance Electric Impedance Frequency Coupling Effect Gershgorin Theorem Grid Impedance Impedance Matrix Machine Control MIMO System Multiple-input–multiple-output System Multivariable Control System Power Grid Single-input–single-output System SISO Impedance Model Stability Stability Analysis Stability in Control Theory Stability Study Stationary Sequence Domain Impedance Synthesis Method Transfer Function Vector Wind Turbine System
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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