NDLI: Self-Scheduled LPV Control of a Wind Driven Doubly-Fed Induction Generator

Content Provider	IEEE Xplore Digital Library
Author	Chen Wang Weiss, G.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. & Electron. Eng., Imperial Coll. London (Chen Wang; Weiss, G.)
Abstract	This paper proposes a self-scheduled control method for a doubly-fed induction generator driven by a wind turbine (DFIGWT), whose rotor is connected to the power grid via two back-to-back PWM power converters. We design a controller for this system using the linear matrix inequality (LMI) based approach to linear parameter varying (LPV) systems, which takes into account the nonlinear dynamics of the system. We propose a two-loop hierarchical control structure. The inner-loop current controller, which considers the slip frequency as a variable parameter, achieves robust tracking of the rotor current reference signals. The outer-loop electrical torque controller aims for wind energy capture maximization and generates the reference rotor current. We perform a controller reduction for the inner-loop LPV controller, which is not doable by conventional model-reduction techniques, because the controller is parameter-dependent. In simulation, the reduced order controller has been tested on a nonlinear 5th order DFIGWT model. Stability and high performances have been achieved over the entire operating range of the DFIGWT
Starting Page	1246
Ending Page	1251
File Size	6140649
Page Count	6
File Format	PDF
ISBN	1424401712
DOI	10.1109/CDC.2006.377474
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-12-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Induction generators Electric variables control Rotors Wind turbines Power grids Pulse width modulation Pulse width modulation converters Nonlinear control systems Control systems Linear matrix inequalities
Content Type	Text
Resource Type	Article

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