If current and voltage are fluctuating, however, other factors come into play, as the current and voltage interact with each other.
如果电流和电压变动，其它因素开始作用，因为电流和电压是互相影响的。(译者注：其它因素？)
2
A method to implement sensorless control of Surface Mounted PMSM based on fluctuating high frequency voltage signal injection was introduced.
本文介绍了一种基于脉动高频电压信号注入法实现面装式永磁同步电机无传感器控制的方法。
3
On the other hand, because of the fluctuating load, such as arc furnace and railway traction locomotive, the voltage of the network will frequently fluctuate and lead to voltage flash.