Design And Analysis Of Transverse Flux Switched Reluctance Motor For Vacuum Pump

The motor of vacuum pump works in the vacuum environment,and the rotor is not easy to dissipate heat.It is necessary to strictly control the temperature rise of the motor to improve the stability of the system The rotor of switched reluctance motor has no winding,the rotor loss is small,and the overall temperature rise of the motor is low,which is of great significance to improve the performance of the drive motor for vacuum pump.Based on the traditional switched reluctance motor,this paper designs a transverse flux switched reluctance motor for vacuum pump.Due to the large space of stator winding,it is conducive to the heat dissipation of the motor,and further reduces the loss of the stator.The overall temperature rise of the motor is further reduced.Firstly,the working principle of transverse flux switched reluctance motor for vacuum pump is explained,and the structure and material of each part of the motor are selected.Based on the basic equations and nonlinear flux linkage model of transverse flux switched reluctance motor,the design scheme of transverse flux switched reluctance motor is given.Then,the three-dimensional magnetic field at different positions of the transverse flux switched reluctance motor is analyzed by using the finite element method,under the current chopping control,the performance of the motor under rated state is analyzed to verify the rationality of the design scheme.In order to reduce the torque ripple of the motor,genetic algorithm is used to optimize the size parameters of the motor.Finally,in order to verify the feasibility of transverse flux switched reluctance motor as the driving motor for vacuum pump.The temperature field,thermal stress and thermal deformation of the bearing of the induction motor,radial switched reluctance motor and transverse flux switched reluctance motor with the same power are compared and analyzed.The results show that the temperature rise,thermal stress and thermal deformation of the bearing of the transverse flux switched reluctance motor are minimum,which indicates the feasibility of the transverse flux switched reluctance motor as the driving motor for vacuum pump.