ON STARTING OF MONOCYCLIC MOTOR

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  • モノサイクリック電動機の起動について
  • モノサイクリック デンドウキ ノ キドウ ニ ツイテ

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The probrem in regard to driving of a monocyclic motor is how to choose a static phase converter allowing a satisfactory starting，acceleration and load characteristics. For an ideal operation，the static phase converter should be continuously varied with the velocity of the motor, but in practice it is common that the choice of the static phase converter is to be done when it is started, accelerated and it is being driven at the rated speed. Upon this，the author tried his analysis by means of symmetrical component theory，as shown in Fig. 1, on troque, unbalance factors and the phase current at the time of starting. The results thus obtained，being represented as functions of four parameters without any dimension，could be applied to given rated motors. Therefore the comparison of starting with various kinds of static phase converter became very simple and easy to be done. Among three kinds of combinations of L, C, and R as elements of static phase converter, the combination where L and C were used was revealed to be most excellent, while a completely balanced state was observed when the impedance angle of the motor was 30°, y=1 and k=2.

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