NONLINEAR CONTROL OF DYNAMIC VOLTAGE RESTORER TO IMPROVE LVRT CAPABILITY IN WIND TURBINE SYSTEMS

  • Van Tan Luong
  • Do Van Si
  • Nguyen Thi Thanh Truc

Tóm tắt

This paper proposes a nonlinear control of dynamic voltage restorer (DVR) based on a feedback linearization (FL) theory to improve a low-voltage ride-through (LVRT) capability of a doubly fed induction generator (DFIG) wind turbine system. First, the nonlinear model of the system including LC filter is obtained in the d-q synchronous reference frame. Then, the controller design of the linearized model is performed by the multi-input multi-output feedback linearization. The simulation results for the 2 MW-DFIG wind turbine system with the DVR compensation at grid faults gives as good performance as those without grid faults.
Keywords: Doubly-fed induction generator, dynamic voltage restorer, feedback linearization theory, voltage sag, wind turbine.

điểm /   đánh giá
Phát hành ngày
2020-03-23
In ra
Tập. 19 Số. 2 (2019)
Chuyên mục
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