Abstract : an introduction has been given on the development trend of arcwelder that can generate electricity by itself home and abroad 文摘:对国内外具有自行发电功能的弧焊机的现状及发展趋势进行了介绍，对独立的开关式直流弧焊电源及发电、电焊两用机基本原理进行了介绍。
In this thesis , a high - frequency variable polarity arc welding power supply was investigated , which consisted of two independent power sources , the variable polarity power supply and the high - frequency pulse one , having advantages both of them 本文针对铝合金焊接研制了一种新型电源,所研究的高频变极性弧焊电源采用双电源结构,由变极性电源和高频脉冲电源组成,综合了两者的优点。
Double forward converter ( dfc ) has many advantages , such as inherent anti - break - though capability , auto clamping the switch voltage etc . regarding the excellent reliability , dfc is one the most widely used topology in the industrial applications , especially for low output voltage area , such as telecommunication energy systems and welding power supply 双管正激变换器具有内在抗桥臂直通的优点，能使开关管上的电压自动箝位在输入电源电压。由于其可靠性高，电路设计简单，因而成为目前在工业中应用最普遍的变换器结构之? ，特别是适合于输出电压较低应用场合，比如通信系统中的一次电源和弧焊电源。
The significance of the digital control of arc welding power source is summarized , digital control means of arc welding power source based on new type semiconductor devices such as mcu , dsp , cpld / fpga are introduced in details , development trend of the digital control of arc welding power source is pointed out 摘要阐述了弧焊电源数字化控制技术的意义，介绍了用单片机、 dsp及cpld / fpga等新型半导体器件实现弧焊电源数字化控制技术的方式，指出了弧焊电源数字化控制技术的发展趋势。
