Abstract: To address the issue of dynamic power regulation in doubly-fed induction generator (DFIG) wind power systems under frequency fluctuation conditions, a dynamic power tracking and vector control strategy based on dual PWM converters is proposed. Using a classic dual PWM converter topology and vector control method, a simulation model was constructed in the MATLAB/Simulink environment. Through maximum power point tracking (MPPT) algorithms and virtual inertia response strategies, fast response to system frequency fluctuations is achieved. Simulation results demonstrate that the DFIG system can effectively adjust rotor current and electromagnetic torque under sudden load changes and varying wind speeds, thereby providing frequency support to the system. In the MPPT+df/dt control mode, frequency drop under sudden load increase is reduced by 32.7%, while frequency peak during sudden load decrease is reduced by 30.3%. The study shows that this control strategy significantly improves the DFIG system's frequency response capability and grid stability, verifying the effectiveness of virtual inertia control in frequency support.