小电流拉弧逆变直流手工弧焊机的研制
发布时间：2018-07-26 13:47
【摘要】：目前针对国内外对焊机的研究中可以发现,特种焊机研究有着实际的应用价值,目前处于非常热门的领域。在我们国内这种焊机一直处于供不应求的紧缺状态,非常具有研究价值。小电流起焊属于一种这种焊机,最低6A就可以起焊且飞溅极小,目前市面上对于这种焊机处于非常急缺的状态,具有一定的市场开阔前景。随着市场经济的增长,适者生存的优胜劣汰,将成为焊机行业结构调整的必然发展的趋势。从焊接技术发展的角度来看,未来的焊机应朝着高效节能的方向发展。为了达到高效率、低成本、小电流起焊的要求,为了满足本焊机低压大电流,大功率等性能指标,通过对全桥、半桥等基本拓扑进行了详细的分析,本设计采用桥式变换器作为主电路拓扑,由多个MOSFET管所组成高频逆变电路,其经过变压器、整流二极管等元件实现输出可调的直流并采用电压电流双闭环基本结构来实现输出电流可调且使其稳定。本文详细的给出了电路设计及参数的详细计算、功率原件的型号选取等。与此同时,本文还分析了控制电路、保护电路、辅助电源等部分的工作原理和主要参数指标的设计。以这些依据为基础,本文研制了一台手工弧焊机。最后,对这款手工弧焊机进行了一系列的测试,得到了有实际意义的数据并对其分析。测试所得到的数据结果基本满足本次焊机设计的要求,性能指标也都符合要求。其中负载效率高达85%,起焊电流最低达到6A,且飞溅极小,整机电路的设计小巧轻便。
[Abstract]:At present, it can be found that the research of special welding machine has practical application value and is currently in a very hot field in the research of welding machines at home and abroad. In our country, this welding machine has been in short supply, very research value. Low current starting welding belongs to this kind of welding machine, the lowest 6A can start welding and spatter is very small. At present, the market for this kind of welding machine is in a very urgent state and has a certain market open prospect. With the growth of market economy, the survival of the fittest will become the inevitable trend of structural adjustment of welding machine industry. From the point of view of welding technology development, the future welding machine should be developed in the direction of high efficiency and energy saving. In order to meet the requirements of high efficiency, low cost and low current starting welding, in order to meet the requirements of the welder, such as low voltage, large current, high power and so on, the basic topologies such as full bridge and half bridge are analyzed in detail. In this design, the bridge converter is used as the main circuit topology, and the high frequency inverter circuit is composed of several MOSFET transistors, which pass through the transformer. Rectifier diodes and other components realize adjustable output DC and use voltage and current double closed loop basic structure to realize the output current adjustable and make it stable. In this paper, the circuit design and the detailed calculation of the parameters, the model selection of the original power are given in detail. At the same time, this paper also analyzes the control circuit, protection circuit, auxiliary power supply and other parts of the working principle and the design of the main parameters. Based on these results, a manual arc welding machine is developed in this paper. Finally, a series of tests are carried out on the manual arc welding machine, and practical data are obtained and analyzed. The data obtained from the test basically meet the requirements of the welding machine design, and the performance indicators are also in line with the requirements. The load efficiency is as high as 85A, the minimum welding current is 6A, the splashing is minimal, and the whole circuit design is small and light.
【学位授予单位】：哈尔滨理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG434
本文编号：2146208
[Abstract]:At present, it can be found that the research of special welding machine has practical application value and is currently in a very hot field in the research of welding machines at home and abroad. In our country, this welding machine has been in short supply, very research value. Low current starting welding belongs to this kind of welding machine, the lowest 6A can start welding and spatter is very small. At present, the market for this kind of welding machine is in a very urgent state and has a certain market open prospect. With the growth of market economy, the survival of the fittest will become the inevitable trend of structural adjustment of welding machine industry. From the point of view of welding technology development, the future welding machine should be developed in the direction of high efficiency and energy saving. In order to meet the requirements of high efficiency, low cost and low current starting welding, in order to meet the requirements of the welder, such as low voltage, large current, high power and so on, the basic topologies such as full bridge and half bridge are analyzed in detail. In this design, the bridge converter is used as the main circuit topology, and the high frequency inverter circuit is composed of several MOSFET transistors, which pass through the transformer. Rectifier diodes and other components realize adjustable output DC and use voltage and current double closed loop basic structure to realize the output current adjustable and make it stable. In this paper, the circuit design and the detailed calculation of the parameters, the model selection of the original power are given in detail. At the same time, this paper also analyzes the control circuit, protection circuit, auxiliary power supply and other parts of the working principle and the design of the main parameters. Based on these results, a manual arc welding machine is developed in this paper. Finally, a series of tests are carried out on the manual arc welding machine, and practical data are obtained and analyzed. The data obtained from the test basically meet the requirements of the welding machine design, and the performance indicators are also in line with the requirements. The load efficiency is as high as 85A, the minimum welding current is 6A, the splashing is minimal, and the whole circuit design is small and light.
【学位授予单位】：哈尔滨理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG434
【参考文献】
相关期刊论文 前2条
1 吴祥淼,黄石生,王志强,方平,薛家祥;逆变焊接电源的发展及其可靠性研究[J];电焊机;2001年02期
2 杨君，王兆安，邱关源;并联型电力有源滤波器直流侧电压的控制[J];电力电子技术;1996年04期
，本文编号：2146208
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