Permeance Calculation and Magnetic Circuit Design Based on Magnetic Field Division

According to the distribution of the flux,dividing the magnetic field of a typical magnetic circuit into several types of regular tube areas.Calculating the permeance of each area and then figuring out the total permeance of the air gap.Compared with the result of FEM(finite element method),the uncomplicated method based on magnetic field division proved to be efficient and precise enough for magnetic circuit design in engineering.