Because of application of rectifierset, the natural power factors were decreased.
晶闸管变流装置的应用，使电力系统的自然功率因数下降。
2
Rectifier diodes cannot be used directly in parallel, because the diode heat resistance have differences, will reduce the reliability, it is better to a set of current of diode.
整流二极管不可直接并联使用，因为二极管的热电阻有差异，会使可靠性降低，最好用一组电流大的二极管。
3
Set up the circuit design criterion for the steady - stage deadbeat control to the line current of a three - phase high-power-factor rectifier based on voltage space-vector PWM.