| 新型半桥软开关CO2逆变焊机 |
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| 引用本文： | 佘致廷,曹达,夏富平,李英.新型半桥软开关CO2逆变焊机[J].焊接学报,2012,33(3):81-84. |
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| 作者姓名： | 佘致廷 曹达 夏富平 李英 |
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| 作者单位： | 1. 湖南大学电气与信息工程学院,长沙,410082
2. 三一集团公司研究总院,长沙,410100 |
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| 基金项目： | 湖南省科技计划基金资助项目(2011FJ3198) |
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| 摘 要： | 针对降低CO2逆变焊机的开关损耗、输出电压纹波以及数字化控制等问题,分析了一种在直流母线回路增加两只功率开关器件的半桥DC-DC变换器软开关工作机理.基于先进精简指令微处理器（advanced RISC machines,简称ARM）设计具有电流和电压双闭环控制策略的全数字化CO2逆变焊机.在Matlab/Simulink环境下,对新型半桥DC-DC变换器的软开关工作过程进行仿真分析.结果表明,与传统模拟控制的半桥逆变焊机相比,这种ARM控制的新型半桥软开关逆变焊机具有开关损耗低、电压纹波小、编程灵活、稳定性好等优点.
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| 关 键 词： | 二氧化碳逆变焊机 半桥直流—直流变换器 软开关 数字化控制 |
| 收稿时间： | 2011/1/17 0:00:00 |
New half-bridge soft-switching CO2 inverter welding machine |
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| SHE Zhiting,CAO D,XIA Fuping and LI Ying.New half-bridge soft-switching CO2 inverter welding machine[J].Transactions of The China Welding Institution,2012,33(3):81-84. |
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| Authors: | SHE Zhiting CAO D XIA Fuping and LI Ying |
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| Affiliation: | 1(1.College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;2.Central Research Institute,Sany Group Co.,Ltd.,Changsha 410100,China). |
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| Abstract: | In order to reduce the switching loss and ripple of output voltage of CO2 inverter welding machine and realize the digital control,the soft-switching commutation principle of half-bridge DC-DC converter with adding two assistant power switches to DC busline side is analyzed in this paper.Based on ARM-controlled and double closed-loop(current and voltage) control strategy,a full digital CO2 inverter welding machine is designed.The soft-switching commutation of new half-bridge DC-DC converter is simulated in the Matlab/Simulink environment.The experimental results illustrate that the full digital ARM-controlled new half-bridge soft-switching inverter welding machine has significant advantages over the traditional analog-controlled inverter welding machine,such as low switching loss,low voltage ripple,flexible programming ability and better stability. |
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| Keywords: | CO2 inverter welding machine half-bridge DC-DC converter soft-switching digital control |
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