| Computer simulation of short-circuiting transfer welding under waveform control on inverter power source |
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| 作者姓名： | 杨立军 冯胜强 董天顺 李桓 |
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| 作者单位： | [1]School of Materials Science and Technology, Tianjin University, Tianjin, 300072 [2]School of Materials Science and Technology, Hebei University of Technology, Tianjin, 300130 |
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| 基金项目： | 国家自然科学基金;天津市自然科学基金 |
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| 摘 要： | A simulation model is introduced about the non-linearity process of short-circuiting transfer in CO2 arc welding for displaying the interaction between the inverter power source and welding arc under waveform control. In the simulation model, the feedback signals of current and voltage are taken respectively at the different phase in a short circuit periodic time and applied to the PWM （pulse width modulation） module in a model of inverter power source to control the output of power source. The simulation operation about the dynamic process of CO2 short-circuiting transfer welding is implemented on the founded simulation model with a peak arc current of 400 A and a peak voltage of 35 V, producing the dynamic arc waveforms which can embody the effect of inverter harmonic wave. The simulating waveforms are close to that of welding experiments.
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| 关 键 词： | 短路过渡焊 逆变器 电源 波形控制 计算机模拟 |
Computer simulation of short-circuiting transfer welding under waveform control on inverter power source |
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| Yang Lijun,Feng Shengqiang,Dong Tianshun,Li Huan.Computer simulation of short-circuiting transfer welding under waveform control on inverter power source[J].China Welding,2007,16(1):9-13. |
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| Authors: | Yang Lijun Feng Shengqiang Dong Tianshun Li Huan |
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| Abstract: | A simulation model is introduced about the non-linearity process of short-circuiting transfer in CO2 arc welding for displaying the interaction between the inverter power source and welding arc under waveform control. In the simulation model, the feedback signals of current and voltage are taken respectively at the different phase in a short circuit periodic time and applied to the PWM(pulse width modulation) module in a model of inverter power source to control the output of power source. The simulation operation about the dynamic process of CO2 short-circuiting transfer welding is implemented on the founded simulation model with a peak arc current of 400 A and a peak voltage of 35 V, producing the dynamic arc waveforms which can embody the effect of inverter harmonic wave. The simulating waveforms are close to that of welding experiments. |
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| Keywords: | inverter simulation short-circuiting transfer harmonic wave waveform control |
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