Abstract: As welding machines are now being used in many applications even in household purposes without any trained person, the system has to be compact and should have a high safety measures. In order to make the system compact, we make use of power electronic components in the machine which decreases the size of the machine to the large extent. But with use of power electronic component there are others problems like harmonics and because of these the Power factor of the machine will decrease. In order to improve the power factor, various power factor correction techniques can be adapted. In this paper, a systematic review of boost rectifier with power factor correction using PWM ICís is presented.

Keywords: Welding power source, Active PFC, Boost rectifier, THD.