Modeling of the 2D Halbach Array with Different Dimensions of Magnets Based on Magnetization Direction

In this paper the Halbach array with different segments per pole are modeled. The dimensions of magnets among segments are different with different magnetization direction. The unified harmonic model for the magnetic flux density distribution of the Halbach array with different segments per pole is derived by using Fourier series and magnetic scalar potential. Then the Halbach array with different segments per pole can be analytically analyzed and compared by the unified harmonic model.