Aiming at the problem that the short-circuit current calculation and analysis during the low-voltage ride-through （LVRT） of existing doubly-fed induction generators （DFIGs） cannot account for the accurate modeling of converter control strategies， this paper proposes a short-circuit current analysis and calculation method based on hardware-in-the-loop （HIL） simulation of the Real-Time Laboratory （RT-LAB） platform. Considering the influence of Crowbar protection operation and the reactive power control strategy of the rotor-side converter （RSC）， the models of the stator short-circuit current of the DFIG and the short-circuit current supplied by the grid-side converter （GSC） during LVRT are analyzed. Based on the real-time on-line LVRT test data of the DFIG converter’s actual controller simulated by RT-LAB， the least squares method is applied to fit the key parameters of the LVRT short-circuit current model. The simulation test results verify the correctness and effectiveness of the proposed method. Since it does not rely on the accurate modeling of converter control strategies， this method provides a solution for the short-circuit current characteristic analysis of new energy generators with different control characteristics.