This paper proposes an asymmetric V-shaped (AVS) field-modulated permanent-magnet (PM) motor (AVS-FMPMM). The asymmetric structure is reflected in the unequal lengths of the V-shaped PMs, which can weaken the cogging torque. Meanwhile, the magnetization directions of all V-shaped PMs are the same, each V-shaped PMs and its adjacent iron core form a pair of magnetic poles, which can reduce the amount of magnet. In this paper, the electromagnetic performance of the proposed motor is studied by using 2D finite element analysis (FEA); then, comparison between the proposed motor and the symmetric V-shaped FMPMM after optimization is carried out. The comparative results show that the AVS-FMPMM can improve the output torque and weaken the cogging torque.