<p>As the capacity of wind turbine generators connected to the power grid continues to increase, the impedance of the traditional power grid gradually increases, causing harmonic oscillations between the grid and grid-connected inverters. Currently, research on the interaction between the grid-side converter (GSC) and the grid in wind turbine generators (WTG) is quite mature, but there is limited research on the interaction between the rotor-side converter (RSC) and the grid-side converter (GSC). In this study, impedance modeling is used to analyze the interaction between the GSC and RSC under adverse grid impedance conditions (SCR = 1.1, L_g = 30mH). The impact of the interaction between the GSC and RSC on the DC voltage, as well as the interaction between the GSC and the grid on the grid current is analyzed. A novel control strategy is proposed, utilizing admittance phase reshaping, to improve the stability margin of the GSC and RSC in wind turbine generators and enhance their adaptability to grid impedance. Finally, the correctness of the theoretical analysis is verified through experimental validation, and the experimental results are presented.</p>