With the popularity of renewable energy generators in the power grid, the traditional doubly-fed induction generator (DFIG) vector control strategy did not provide additional active power support for the power grid due to the decoupling of inertia and power grid frequency fluctuation. To solve this problem, an improved virtual synchronous generator (VSG) control strategy is introduced into the rotor-side converter (RSC) control of doubly-fed wind turbines. Aiming at the frequency deviation problem existing in the traditional VSG control strategy, a Washout filter is applied in the P-f droop link, which can keep the frequency at the stable power frequency of 50 Hz without adding additional secondary control loop. At the same time, in order to solve the problems of limited dynamic response and poor robustness of the inner loop of voltage and current control based on internal proportional integral ( PI) control in traditional VSG, the port controlled hamiltonian with dissipation (PCHD) is used for the first time in this paper. The interconnection and damping assignment passivity based-control ( IDA-PBC) method of PCHD model was applied to the inner loop current control. A passive controller for rotor side converter (RSC) inverter is designed. Finally, a simulation system is built for experimental verification, and the results show the effectiveness and superiority of the proposed control strategy.