An Effective Rotor Current Controller for Unbalanced Stand-Alone DFIG Systems in the Rotor Reference Frame

作者：Phan Van Tung; Lee Hong Hee^*; Chun Tae Won

来源：Journal of Power Electronics, 2010, 10(6): 724-732.

DOI：10.6113/JPE.2010.10.6.724

• Doubly-fed induction generator (DFIG)
• Resonant controller
• Stand alone wind system
• Unbalanced loads
• Variable-speed wind system

This paper presents an effective rotor current controller for variable-speed stand-alone doubly fed induction generator (DFIG) systems feeding an unbalanced three-phase load The proposed current controller is developed based on proportional plus two resonant regulators, which are tuned at the positive and negative slip frequencies and implemented in the rotor reference frame without decomposing the positive and negative sequence components of the measured rotor current In addition, the behavior of the proposed controller is examined in terms of control performance and stability with respect to rotor speed variations i e slip frequency variations Simulations and experimental results are shown to validate the robustness and effectiveness of the proposed control method

• 出版日期2010-11