The dualwinding induction generator had the advantage of adjusting the excitation magnetic field while keeping the load voltage constant for the step change in load. The active current of the static excitation regulator controlled the bus voltage and the reactive current controlled the load voltage. Both of them form the feedback current for the closed loop control of the system. Phase locked loop (PLL) provided phase information for coordinate transformation. Appropriate PLL could improve the speed and accuracy of coordinate transformation, and provide fast and accurate feedback information to the control system. The characteristics of excitation voltage of dual winding induction generator was analyzed, and the different working characteristics of double dq transformation PLL, delayed signal cancellation PLL and delayed signal cancellation based moving average filtering PLL were compared. Finally, the simulation of the dual winding induction generator system with three different PLL were carried out, and delayed signal cancellation based moving average filtering PLL was found to be the best one.