High-Frequency Soft-Switching PWM DC-DC Converter with Active Output Rectifier Operating as a Current Source for Arc Welding Applications. Issue 6 (3rd April 2017)

• Record Type: Journal Article
• Authors: Dudrik, Jaroslav; Pástor, Marek; Lacko, Milan; Žatkovič, Róbert
• Is Part Of: Electric power components and systems. Volume 45:Issue 6(2017)
• Page Start: 681
• Page End: 691
• Publication Date: 2017-04-03
• Subjects: DC-DC converter -- active rectifier -- soft switching -- zero-voltage switching -- zero-current switching -- arc welding; Electric machinery -- Periodicals; 621.3104205
• DOI: 10.1080/15325008.2017.1291770
• Languages: English
• ISSNs: 1532-5008

Abstract

Abstract: This paper introduces a high-frequency soft-switching pulse-width modulation DC-DC power converter with secondary active rectifier tested as a DC current source for arc welding applications. The soft-switching DC-DC converter consists of a high-frequency full-bridge inverter, high-frequency power transformer, and a controlled output rectifier with new secondary energy recovery turn-off snubber. Circulating currents in the converter are reduced by using active rectifier, and RMS values of the currents in primary and secondary switches are decreased by utilizing a novel control algorithm. The experimental results of a 4.5 kW DC-DC converter working at switching frequency of 100 kHz are presented.