Finite Element Analysis on Magnetic Flux Leakage of Interior Permanent Magnet Generator for Vehicle
In order to solve the problem that no-load magnetic flux leakage coefficient is not accurate when it is calculated by the method of magnetic circuit, a model of interior permanent magnet(IPM) generator with 36 slots for vehicle was built through the finite element method of the ANSYS, and then a means of calculating the IPM generator’s magnetic flux was put forward after analyzing the magnetic flux leakage conditions of different rotor structures under the circumstance of not changing stator structure. The ralationships among the pairs of poles, the magnet width, the thickness of non-magnetic sleeve, the length of air-gap and the magnetic flux leakage coefficient were obtained, and they provided forceful guidance for the structural design of IPM generator.
X. Y. Zhang et al., "Finite Element Analysis on Magnetic Flux Leakage of Interior Permanent Magnet Generator for Vehicle", Applied Mechanics and Materials, Vols. 66-68, pp. 483-488, 2011