基于SiC器件的大功率高功率密度弧焊电源  

High power and high power density arc welding power supply based on SiC devices

作　　者：赵千淇 程旭峰 郝欣 李赫 ZHAO Qianqi;CHENG Xufeng;HAO Xin;LI He(School of Mechanical Engineering,Hebei University of Science and Technolgy,Shijiazhuang 050018,China;Infineon Technologies AG,Shanghai 201210,China)

机构地区：[1]河北科技大学机械工程学院,石家庄050018 [2]英飞凌科技(中国)有限公司,上海201210

出　　处：《焊接》2025年第4期34-42,49,共10页Welding & Joining

基　　金：教育部产学合作协同育人项目(220501768073535)。

摘　　要：【目的】旨在解决当前传统的工业级弧焊电源的效率低、功率密度低等问题。【方法】研制了一种基于SiC器件的大功率高功率密度弧焊电源,该电源的开关器件采用SiC金属-氧化物半导体场效应晶体管(Metal-oxide-semiconductor field-effect transistor, MOSFET),以提高电源的工作频率,从而减小电源中磁性元件的体积和开关损耗。同时,在电源的印刷电路板(Printed circuit board, PCB)结构布置上采用单板设计,进一步减小电源的整体体积。文中介绍了电源工作原理,并详细给出了电源的硬件设计原理。根据电弧焊工艺对电源的特性要求,搭建了一台输出功率为20 kW的弧焊电源样机,并进行了开环和闭环试验,测试了电源的外特性、整体效率以及功率密度。【结果】试验结果表明,文中所提出的弧焊电源与传统的工业级弧焊电源相比,功率密度提高了8倍以上,且峰值效率可达88.49%。【结论】文中基于SiC器件的大功率高功率密度的弧焊电源为电弧焊领域的发展与进步提供了试验数据。[Objective]The aim is to solve the problems of low efficiency and low power density of traditional industrial arc welding power supply.[Methods]A high power and high power density arc welding power supply based on SiC devices is developed.The switch of this power supply uses SiC metal-oxide-semiconductor field-effect transistor(MOSFET)to improve the operating frequency of power supply,so as to reduce the volume of the magnetic components and switch losses in the power supply.At the same time,a single board design is adopted in the printed circuit board(PCB)structure arrangement of the power supply,so as to further reduce the overall volume of the power supply.The paper introduces the working principle of the power supply and gives a detailed account of the hardware design principle of the power supply.According to the characteristics requirements of power supply for arc welding process,a model of arc welding power supply with output power of 20 kW is up,open-loop and closed-loop tests are conducted.The external characteristics,overall efficiency and power density of the power supply are tested.[Results]The experimental results show that the power density of the proposed arc welding power supply in this paper is more than 8 times higher than that of the traditional grade arc welding power supply,and the peak efficiency can reach 88.49%.[Conclusion]The high power and high power density arc welding power supply based on SiC devices in the paper provides experimental data for the development and progress the arc welding field.

关 键 词：高频逆变 碳化硅器件 高功率密度 单板结构设计 弧焊电源 

分 类 号：TG434.1[金属学及工艺—焊接]