控制器根据补偿点的功率因数大小，实时选择控制策略，使补偿点的功率因数值维持在设定值和1之间。
According to the power factor of compensation point, the controller chooses different control strategies to maintain the power factor between the setting value and 1.
通常情况下计算直流传动电力机车的功率因数较为困难，而且计算出来的数值不甚准确。
Usually, it is difficult to compute the power-factor of DC drive electric locomotive, furthermore, the outcome is not exact.
航空同步发电机用零功率因数负载特性和空载特性所测得的波梯电抗数值比正常值大，致使在电机分析和计算中无法使用。
The value of Potier reactance of aircraft synchronous generator is larger than regular one in the tests of the inductance load and no load operating characteristics.
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