摘要
本文讨论了脉宽调制（ＰＷＭ）逆变式弧焊电源的功率因数。输入滤波电容是导致功率因数较低的主要因素，单相电源宜采用ＬＣ联合滤波，而三相电源则宜用较小的电容，以获得较高的功率因数，且应尽量选用三相电源。并且提出高频开关电路是进一步提高功率因数的有效方法。
The power factor of PWM are welding power source has been discussed in this paper. The main factor of lower power factor has been caused by the input filter capacitor. To use the single-phase power supply for LC combination filter and use the three-phase power supply for smaller capacitor to obtain the higher power factor, so the three-phase power supply should be used as for as possible. The author advances that the high-frequency switched circuit is effective methods of improving power factor.
出处
《电焊机》
1996年第4期5-8,共4页
Electric Welding Machine
关键词
弧焊
电源
功率因数
逆变弧焊
power source inverter are welding power factor
