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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2016-03-17
Study on Radial Suspension Force of Single Winding Bearingless Induction Motor Based on Two-Fundamental Wave Method
By
Zebin Yang,

    Professor Zebin Yang

    School of Electrical and Information Engineering

    Jiangsu University

    China

    Homepage

Ren Jin,

    Dr. Ren Jin

    College of Electrical & Information Engineering

    Jiangsu University

    China

    Homepage

Xiaodong Sun,

    Professor Xiaodong Sun

    Automotive Engineering Research Institute

    Jiangsu University

    China

    Homepage

Wei Yu Zhang

    Dr. Wei Yu Zhang

    College of Electrical & Information Engineering

    Jiangsu University

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 47, 13-25, 2016
doi:10.2528/PIERM16011903 | Google Scholar

Abstract
The radial suspension force with a new structure of a bearingless induction motor based on single winding is researched. Compared to the conventional double-winding structure of bearingless induction motor, torque and suspension forces are produced with a single-winding system. Bearingless induction motor is a nonlinear, multi-variable and strong coupling system. It is difficult to obtain an accurate mathematical model on the radial suspension force. So the research method about radial suspension force of a single-winding bearingless induction motor is proposed, based on two fundamentals. Firstly, a new structure and operation principle of a single-winding bearingless induction motor is introduced. Then the air-gap flux density distribution of the single-winding bearingless induction motor is analyzed in detail. The accurate mathematical model of radial suspension force is deduced by using two-fundamental wave method and Maxwell's stress tensor method. Secondly, according to the transient analysis of the single-winding bearingless induction motor which its speed is 6000 r/min, by finite element method (FEM), the component of radial suspension force in x-axis and y-axis is obtained by FEM simulation analysis. The calculation results used by FEM and the theoretical calculation results of mathematical model used by two fundamental wave method have been compared. Thirdly, an experimental prototype is produced, and suspension experiment of prototype is carried out. Then measured result of radial suspension force is analyzed. The analysis results show that the prototype has excellent suspension characteristics, and the mathematical model of radial suspension force based on two-fundamental wave method has low error and high precision.
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Citation
Zebin Yang, Ren Jin, Xiaodong Sun, and Wei Yu Zhang, "Study on Radial Suspension Force of Single Winding Bearingless Induction Motor Based on Two-Fundamental Wave Method," Progress In Electromagnetics Research M, Vol. 47, 13-25, 2016.
doi:10.2528/PIERM16011903
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