感应电机的运行状态及向量图

中文字数:4436,中文页数:7  英文字数:2710页数:10

The vector diagrams of the induction machine, like those of a transformer, are constructed in accordance with the equivalent. T-circuit of the machine, which correspond to the physical working conditions of the machine. The above diagrams are plotted in this case for one phase of the machine with the rotor winding referred to its stator winding.
 Motor operation. This condition, as was indicated previously, is the main operating condition of an induction machine. When the machine operates as motor energy is transmitted through the magnetic field from the primary side to the secondary as in a transformer.  Therefore, the vector diagram of an induction machine during motor operation is quite similar to the vector diagram of a transformer.

与变压器的向量图一样，感应电机的向量图也是根据反映其实际运行状况的T型等值电路来构造的。在这种情况下，上述向量图是画其转子绕组折算到定子边的一相的向量图。
 电动机运行。如前所述，这种状态是感应电机的主要运行状态。当电机作电动机运行时，像变压器一样，能量通过磁场从原边传递给副边。因此，感应电机作电动机运行时的向量图与变压器的向量图极为相似。
 主磁通感应电势，该电势等于T型电路中激磁支路两端的电压。激磁电流领先，一个由定子铁损耗决定的相位角（由于在正常运行状况下，s=0~0.05，其值较小，因而转子铁损耗很小，该相位角主要由定子铁损耗决定）。

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