To address unequal output-current sharing in energy-storage converters of PV-batter DC microgrids caused by line-resistance mismatches, this paper proposes a parallel current-sharing control strategy based on a power-loop–free virtual DC machine (VDCM). The proposed power-loop–free VDCM architecture dispenses with the power and torque-calculation, while providing virtual inertia and damping to mitigate DC-bus voltage sag. Moreover, by introducing a virtual voltage-drop equalizer within the power-loop–free VDCM framework, the adverse effects of line-resistance mismatch on converter current sharing are effectively removed, achieving SOC-equalized current distribution among storage units and ensuring system stability. Finally, the proposed control strategy is verified through the establishment of a simulation model and the construction of an experimental platform, demonstrating the effectiveness of the VDCM-based parallel current-sharing controls.