华南理工大学学报(自然科学版) ›› 2004, Vol. 32 ›› Issue (8): 30-33,46.

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大功率弧焊逆变器主电路的建模与仿真

周漪清 黄石生 张红兵   

  1. 华南理工大学 机械工程学院‚广东 广州510640
  • 收稿日期:2004-03-08 出版日期:2004-08-20 发布日期:2015-09-09
  • 通信作者: 周漪清(1962-)‚男‚博士生‚现任江门广播电视大学讲师‚主要从事现代电源与智能控制技术研究. E-mail:ZXM1688@21cn.com
  • 作者简介:周漪清(1962-)‚男‚博士生‚现任江门广播电视大学讲师‚主要从事现代电源与智能控制技术研究.
  • 基金资助:
     国家自然科学基金资助项目(50375054)

Modeling and Simulation of the Main Circuit in High-power Arc-welding Inverters

Zhou Yi-qing  Huang Shi-sheng  Zhang Hong-bing   

  1. College of Mechanical Engineering‚South China Univ.of Tech.‚Guangzhou510640‚Guangdong‚China
  • Received:2004-03-08 Online:2004-08-20 Published:2015-09-09
  • Contact: 周漪清(1962-)‚男‚博士生‚现任江门广播电视大学讲师‚主要从事现代电源与智能控制技术研究. E-mail:ZXM1688@21cn.com
  • About author:周漪清(1962-)‚男‚博士生‚现任江门广播电视大学讲师‚主要从事现代电源与智能控制技术研究.

摘要: 为了合理地设计大功率弧焊逆变器‚在对移相全桥零电压脉宽调制(FB ZVS-PWM)大功率弧焊逆变器主电路工作原理分析的基础上‚建立了大功率弧焊逆变器主电路的小信号模型.由于功率变压器漏感的作用‚分析过程中做了近似假设‚这对模型的精度产生了影响.文中分析了不同模型参数对模型传递函数幅频特性的影响.结果表明‚尽管合理设计输出电感对减少 CO 2 气保焊中的飞溅甚为重要‚但该模型无法从根本上解决飞溅问题.要完全解决 CO 2 气保焊中的飞溅问题‚关键在于逆变器的智能化.

关键词: 移相控制, 脉宽调制, 弧焊逆变器, 建模, 仿真

Abstract: In order to design high-power arc-welding inverters rationally‚a smal- l signal model of the main circuit in the high-power arc-welding inverter was established‚based on the analysis of the main circuit in the high-power arc-welding inverter with phase-shifted full bridge zero-voltage-switched PWM (FB ZVS-PWM).An approximate as-sumption was proposed during the model analysis in view of the effect of the leakage inductance in power transformer‚which causes a significant effect on the model precision.The magnitude and phase characteristics of the contro- l to-out -put transfer function of the model which varied with different model factors‚were also analyzed.The results showthat‚although rational design of the output filter inductor plays an important role in reducing the sputter in CO 2 weld-ing‚the model itself can not solve the problem of spatter completely.Implementing the intellective inverter is the key to success.

Key words: phase-shifted control, pulse width modulation, arc-welding inverter, modeling, simulation

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