In this paper, a method of torque ripple suppression for an interior permanent magnet synchronous motor (IPMSM) with concentrated winding based on spatial magnetomotive force (MMF) distribution is proposed. This paper discusses MMF distribution about the concentrated winding. The proposed method works on the amount of three-phase current with spatial harmonics. A torque ripple can be suppressed by increasing this amount of three-phase current. The effectiveness of the proposed superimposed harmonic method to suppress the torque ripple is higher than that of the conventional sine-wave method. Experimental results confirm the validity of the proposed method.