A NEW TECHNIQUE FORTHE DFIG’s RSC AND GSC CONVERTERSTO REJECT DC LINK VOLTAGE RIPPLE

  • Tran Thi Ngoat Hung Yen University of Technology and Education
  • Do Tuan Khanh Hung Yen University of Technology and Education
  • Le Ngoc Giang Air Defence - Air Force Academy
  • Pham Minh Hoi Air Defence - Air Force Academy
Keywords: : Doubly fed induction generator (DFIG), Rotor side converter (RSC), Grid side converter (GSC), improved control, DC - link voltage ripple

Abstract

This paper presents a new control strategy to reduce the fluctuation of DC bus voltage for a back-to-back PWM converter in a DFIG wind turbine systems. DC-link voltage Feed-forward compensation control strategy for DFIG’s RSC and GSC converter is proposed to limit the fluctuation range of the dc-link voltage. The dynamic performances of the DFIG are compared with the traditional control method. Furthermore, the capabilities of keeping the dc-link voltage stable are also compared in the ride-through control of DFIG during a three-phase grid fault, by using a developed 2 MW DFIG wind power system model. The simulation results have shown that the proposed control strategy is more effective, and the fluctuation of the dc-link voltage may be successfully limited in a grid fault .

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Published
2017-01-12
How to Cite
Tran Thi Ngoat, Do Tuan Khanh, Le Ngoc Giang, & Pham Minh Hoi. (2017). A NEW TECHNIQUE FORTHE DFIG’s RSC AND GSC CONVERTERSTO REJECT DC LINK VOLTAGE RIPPLE. UTEHY Journal of Science and Technology, 12, 56-61. Retrieved from http://tapchi.utehy.edu.vn/index.php/jst/article/view/235