摘要
Abstract
By the review of the development history of DC welder,and the analysis of traditional rotary DC welding & silicon rectifier DC welding power source,electronic SCR DC welding power source and inverter DC welding power source,we can make a conclusion:" high efficiency, energy-saving, material-saving, green and low carbon, clean and environmental protection" is inevitable development direction of the DC welding power source in the future.By the analysis of the power supply noise filter circuit in the main circuit of the inverter welding power source,the topological structure of primary side power frequency rectifier circuit and medium frequency inverter circuit,we conclude that the detail technical proposal of "high efficiency .energy-saving, material-saving, green and low carbon, clean and environmental protection" is:Inverter DC welding power with EMI filter makes it to reduce the EMI signal amplitude,by this it becomes much cleaner and more clean and environmental protection.Adopt primary side power frequency rectifier circuit with PFC instead of ordinary power frequency rectifier filter circuit so as to improve the power factor,and reduce the power grid harmonic interference from power source.Adopt suitable soft switch inverter technique so as to reduce the switching loss,improve the power efficiency.关键词
逆变式直流焊接电源/谐波/电磁骚扰/功率因数/软开关Key words
inverter DC welding power source/ harmonic signal/ EMI/ PFC/ soft switch分类
矿业与冶金
