Study on the Design and Magnetic Field’s Computation of Bearingless Switched Reluctance Motor

　　Study on the Design and Magnetic Field’s Computation of Bearingless Switched Reluctance Motor
　　The Bearingless Switched Reluctance Motor (BSRM) ,which utilizes the comparability between the windings of magnetic bearing and switched reluctance motor stator and puts the winds of creating suspending force and torque on the stator poles,can suspend and rotate itself at the same time by using some control strategies . The BSRM not only has the advantages of the switched reluctance motor and Magnetic Bearing, but also works free frictionless. It Neodymium Magnets can meet the need of high-speed and super high-speed driving systems.Basing on proposing the configuration of the bearingless switched reluctance motor, this paper analyses the working principle of the permanent magnet biased radial-axial direction magnetic bearing and the bearingless switched reluctance motor in detail. According to virtual displacement principle, the mathematic model of suspending force and torque of the BSRM is set up, which doesn’t consider magnetic saturation. Basing on the principle of electromagnetism and the designing theory of SRM, a permanent magnet biased radial-axial direction magnetic bearing and a bearingless switched reluctance motor are designed. The FEM(fmite-element analysis) simulation of magnetic field are performed by using Maxwell/3D and Maxwell/2D. The results of simulation validate that the designing method is correct and the designed samples are feasible. Finally, the http://www.999magnet.com/products/110-sintered-neodymium-magnets non-linear relationship between suspending force, torque and the current of winds,the position of rotor, the radical displacement of the rotor are obtained with the simulation of magnetic field to lay a foundation for more researches of the BSRM.