This paper describes an importance of performing magnetic field analysis taking into account a 3D model and a magnetic hysteresis, in order to evaluate magnetic phenomena on an electrical motor obtained from a H-coil. Numerical analyses of 4 patterns are performed: using initial B-H property or hysteresis B-H property on 2D or 3D model. As a result, the 3D hysteresis analysis can indicate the tendency obtained from experiment using H-coil most properly.