An Improved Control Method for a DFIG in a Wind Turbine under an Unbalanced Grid Voltage Condition

This paper presents a control method, which reduces the pulsating torque and DC voltage problems of a doubly fed induction generator (DFIG)-based wind turbine system. To reduce the torque and power ripple, a current control scheme consisting of a proportional integral (PI) controller is presented in...

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Veröffentlicht in:Journal of electrical engineering & technology 2010, Vol.5 (4), p.614-622
Hauptverfasser: Lee, Sol-Bin, Lee, Kyo-Beum, Lee, Dong-Choon, Kim, Jang-Mok
Format: Artikel
Sprache:kor
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Zusammenfassung:This paper presents a control method, which reduces the pulsating torque and DC voltage problems of a doubly fed induction generator (DFIG)-based wind turbine system. To reduce the torque and power ripple, a current control scheme consisting of a proportional integral (PI) controller is presented in a positive synchronously rotating reference frame, which is capable of providing precise current control for a rotor-side converter with separated positive and negative components. The power theory can reduce the oscillation of the DC-link voltage in the grid-side converter. In this paper, the generator model is examined, and simulation results are obtained with a 3 kW DFIG-based wind turbine system to verify the proposed control strategy.
ISSN:1975-0102
2093-7423