| The magnetic levitation motor as a new way of supporting, combined the function of motor rotating and bearing supporting, is the new development direction in the field of international high-speed motor research. Magnetic levitation motor has a wide range potential application market in China, almost throughout pharmaceutical industry, chemical industry, semi-conductor industry, food industry, manufacturing and all various fields. Carrying out the research and practice application of magnetic levitation motor actively also has a great realistic and far-reaching significance for energy transportation, aerospace, military industry, industrial and agricultural production besides the development of various fields in daily life. Magnetic levitation induction motor as a kind of typical electromechanical integration product, the research involves multidisciplinary knowledge of electromechanics, aerodynamic, hydromechanics, electromagnetism and electromechanical energy conversion and so on. No doubt that it is a great challenging research topic. This article based on electromagnetic bearing levitating technology and traditional induction motor’s principle. It has incomparable advantages such as high speed, simple, small volume, high stability and control accuracy. In addition, a highlight of this paper is simulating the air-gap pressure distribution of magnetic induction motor on fluid field. Because so far, the research of this aspect is still confined to calculate and analyze.This paper mainly divides into following parts:1.Introducing the development at home and abroad, current status,application prospect and development trend of magnetic levitation motor, putting forward the research direction of the magnetic levitation induction motor and significance;2. First of all, put forward the theory of magnetic induction motor and clarify them. Secondly, derive and establish the mathematical model of magnetic induction intensity, electromagnetic torque and electromagnetic levitation force connected with mathematical model of stator and rotor’s air-gap distribution. Finally, establish flux equation based on inductive principle;3. Designing the structure of whole magnetic induction motor, stator, rotor, and accounting for the motor structure parameters and performance;4.Using ANSOFT simulation software to simulate electromagnetic field when rotor take the position of center or eccentricity. At the same time, use MATLAB to carry on fitting simulation data in different eccentric cases and get the relationship between air-gap eccentric displacement and bearing capacity, levitation force, torque;5.Based on the theory of gas dynamic pressure bearing,simulate air-gap pressure distribution of Fluent under different rotor’s eccentricity or rotating speed and given a tiny disturbance quantity to simulate gas-gap pressure distribution. Analyze the simulation data and conclude the relationship between gas-gap pressure and eccentricity rate, speed, and carrying capacity of the air-gap under the action of fluid field. At last, combines air-gap stiffness of magnetic field and fluid field to preliminary simulate total air-gap carrying capacity. |
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