Impedance measurement of renewable energy grid-connected inverters (GCIs) is a critical method for accurately obtaining inverter impedance characteristics when control parameters are unknown. Such measurement methods require an additional perturbation injection device to enable impedance measurement. The measurement device injects perturbation signals at specific frequencies; however, the distribution of these signals across the target inverter is significantly affected by the relative magnitude of the inverter impedance and grid impedance. Therefore, it is necessary to select either parallel current injection or series voltage injection depending on the actual operating scenario. To ensure accurate impedance measurement under varying inverter-grid impedance ratios, this paper proposes a hybrid impedance measurement topology that integrates the advantages of both series voltage injection and parallel current injection. The series unit delivers voltage perturbations with specified amplitude and frequency, whereas the parallel unit injects current perturbations with specified amplitude and frequency. Furthermore, a three-phase impedance measurement method based on single-phase perturbation injection is adopted, which minimizes the required power rating of the device and enhances measurement efficiency. Finally, the effectiveness of the proposed topology and its control strategy is validated through impedance measurements on a renewable energy GCI using both simulations and hardware-in-the-loop (HIL) experiments.