Current doubler rectifier for arc welding machines with a phase-shift ZVS three-level DC-DC converter

摘要

This paper introduces a 3-level of phase-shift ZVS-PWM with H bridge DC/DC with high power converter at a high-frequency link for arc welding machine. The proposed model has reduced filter size, improved dynamic response and reduced voltage losses on the semiconductor switches. Current doubler circuit is inserted on the secondary side of in a converter, and a high-output current is produced from the secondary-side circuit so, efficiency may be getting better by using current doubler rectifier (CDR). The basics of working the proposed DC/DC converter, test, and analysis are introduced. The power conversion characteristics and power loss analysis are discussed with the marked features. These features create the proposed model suitable for high input current and high voltage applications.