Characteristic Analysis And Structure Optimization Of Magnetic Suspension Spherical Induction Motor

In the field of aerospace,the traditional satellite attitude control system is generally composed of multiple control moment gyroscopes or flywheels.The structure of the system is complex and the components are redundant,which seriously affects the weight,volume,power consumption and cost of the attitude control system.The most outstanding feature of the maglev spherical motor is that the rotor is a maglev sphere,which can rotate continuously in any direction in three-dimensional space,so as to output the attitude control torque in any direction,avoiding the inherent dynamic coupling problem between multiple traditional flywheels,with higher control accuracy and driving efficiency;at the same time,multiple maglev spheres can be freely configured,driven in parallel,and output into In addition,the maglev ball also supports the rapid integration,on orbit repair and reconstruction of the satellite,which has theoretical significance and practical value for the research of maglev ball motor.The main contents of this paper are as follows:Firstly,the structure principle and working characteristics of the separation sphere motor are studied and simulated.This paper describes the structure and size of each part of the floating rotation separation induction ball motor,and introduces its working principle.The rotation and suspension output performance,loss,magnetic density and other parameters at rated output are simulated by finite element method,and the electromagnetic design of the motor is optimized according to the calculation results;Secondly,this paper introduces and analyzes the structure,working principle and advantages of the integral sphere motor This paper describes the overall structure and size of the floating integral induction ball motor,and deduces and sorts out the influence of the frequency and size of the current source and the design parameters of the motor on the performance of the motor when the integral sphere motor is working according to the relevant principle formula of the induction motor and the magnetic field electromagnetic force;Then,the finite element simulation and result analysis of the rotation and suspension performance of the integral sphere motor are carried out.Combined with the theoretical analysis of the front face of the integral sphere motor,the derivation conclusion of the integral sphere motor is verified by simulation.At the same time,the simulation results are summarized,and the optimal selection rules of various parameters are summarized;Finally,the parameters optimization and thermal analysis of the integral sphere motor are carried out.According to the simulation results of the integral sphere motor,this paper summarizes the defects existing in the operation of the motor,analyzes the causes and the optimization direction,so as to adjust and improve the electromagnetic structure design of the motor,and further verifies the effect of the optimization of the motor through the magnetic thermal coupling simulation.