AC power regulation control welding power supply based on resonant circuit

With the widespread application of welding technology in the construction of large metal components, the need to address the challenges of low efficiency, limited output power, difficulty in achieving the required temperature at the welding head, and susceptibility to soldering defects in traditional welding power supplies has grown. To address these issues, this study introduces a welding power supply system based on an LC resonant converter. By leveraging resonance techniques, the system reduces switching losses, enhances power factor, and achieves zero-voltage switching for the main power devices, thereby elevating power supply efficiency and stability. Experimental results demonstrate that the proposed system achieves high-efficiency and high-power output, simultaneously attaining the desired welding head temperature and substantially minimizing instances of soldering defects.