Method and device for determining electromagnetic force harmonic waves

The invention provides a method and device for determining electromagnetic force harmonics. The method can be used for analyzing the electromagnetic force of a target radial flux motor. When the method for determining the electromagnetic force harmonic waves is executed, firstly, three-dimensional data of decomposed electromagnetic force are obtained, the three-dimensional data are data of the decomposed electromagnetic force in three-dimensional distribution in the time direction, the space axial direction and the space tangential direction, and the decomposed electromagnetic force comprises radial electromagnetic force, tangential electromagnetic force and axial electromagnetic force. Then, according to the three-dimensional data analysis result, time, space axial and space tangential three-dimensional harmonic characteristics of the electromagnetic force are determined; therefore, by determining the time, space axial and space tangential three-dimensional harmonic characteristics of the electromagnetic for