誘導電動機ロータの回転磁界中における振動 : 2極機の場合

概要

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Vibration of a rotor in rotary magnetic field of a two poles induction motor has been investigated. The vibration is measured at any relative position of the stator and the rotor in various power supply frequencies in the experiment and is analyzed in consideration of structural factors of the rotor. The following conclusion is obtained through the experiment and the analysis, (1) 2ω vibration of two times of the power supply frequency ω occurs because of offset between the stator center and a gyration center of the rotor. (2) Two vibrations of ω(1-s) and ω(1+s) where s is slip ratio occur because of unbalance of the rotor or disagreement between the gyration center and the geometrical center of the rotor. (3) An unstable vibration is predicted in the analysis when the power supply frequency equals to a natural frequency of the rotor. But the unstable vibration did not occur in the experiment because of the damping.
一般社団法人日本機械学会の論文
1999-10-25