Abstract: The friendly frequency response of wind generators (WGs) is important for improving the frequency dynamic performance of power system connected with high proportion wind power. In this paper, the feasibility for both maximum power point tracking (MPPT) operation WGs using variable proportion coefficient to regulate the rotor speed and flywheel energy storage system (FESS) using power condition to provide frequency support was studied at first. Then, from considering to optimize the frequency response characteristics of WGs-FESS system, the bilayer synergetic control (SC) scheme for coordinating the FESS with the MPPT operation WGs to provide frequency response was proposed based on SC theory. Through constructing the macro variable of linearly combining grid frequency deviation with the virtual electrical inertia of WGs, the variable proportion coefficient based rotor speed regulation strategy of MPPT operation WGs at different wind speed coordinately providing inertia support was designed based on the control manifold of the zero input response of macro variable. Further, linearly combining the power condition reference with the macro variable was used to implementing the SC based inertia support of the WGs. The active power condition strategy which makes the FESS to cooperate with the WGs in providing frequency support and quickly restore the MPPT operation of the WGs without causing the secondary frequency disturbance was designed based on the same control manifold. Finally, the validity of the proposed bilayer SC control strategy was verified by the simulation of load frequency disturbance in the power grid connected with WGs. The simulation results also indicate that the strategy not only is beneficial for improving the dynamic characteristics of power system recovering synchronous stability, but also is able to reduce the speed requirement of active power regulation used for the synchronous generator regulating frequency.