|   PhD
      Defence by Rongwu Zhu on 17 December, 2015Title: Improved Control Strategy for DFIG-based Wind Turbine
      System during Grid Voltage Disturbances and FaultsSupervisorProfessor
      Zhe ChenOpponentsAssociate Professor, Filipe Miguel Faria Da Silva,
      Dept. of Energy Technology, Aalborg UniversityProfessor Li Ran, University of Warwick, Coventry, UKSenior Principal Scientist Lennart Harnefors, ABB, Corporate Research, Västerås, Sweden
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