In this paper, a novel scheme based on active circuits is proposed to eliminate the common-mode voltage (CMV) in three-level neutral-point clamped (NPC) inverters. The proposed additional circuit consists of a low power full-bridge converter and a four-winding singlephase transformer. This method does not affect the maximum modulation index of the inverter, which is suitable for the high power medium voltage machine drives. The simulation results show the effectiveness of the proposed method.