Firstly, this paper introduces the basic model and control method of DFIG, analyzes the advantages and disadvantages of the traditional frequency control method and power control method of DFIG, and expounds the virtual inertia control and overspeed load shedding control in detail. The contradiction between virtual inertial control and maximum power tracking control is expounded, and the influence of virtual inertial parameters on frequency modulation effect is analyzed.<br>
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