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the supplemental  df/dt  control is the common method for wind power generation to support system inertial response. This paper investigates the impact of the  df/dt  inertia controller on doubly fed induction generator (DFIG) type wind turbine. The controller is usually a high pass filter. Two parameters which are the gain and the time constant are considered. By constructing the linearized model of DFIG, the impacts of the two parameters of the controller are discussed. It shows that with different phase locked loop (PLL) parameters and current control parameters, different time constants and gains are required to ensure the DFIG stability. The time domain simulation validates the result.

Impact of df/dt Inertia Control on Doubly Fed Induction Generator Type Wind Turbine