Inverter current source for pulse-arc welding with improved parameters

2017 40th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO) Pub Date : 2017-05-01 DOI:10.23919/MIPRO.2017.7973404

V. Valchev, D. D. Mareva, D. Yudov, R. Stoyanov

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引用次数: 2

Abstract

The feature of power current sources for pulse-arc welding is superimposing of current pulses with a defined shape, size and frequency on the main welding current. The purpose of this paper is to explore the possibilities to control the parameters of superimposed pulses by a particular (additional) welding inverter current source with improved parameters. The current pulse superimposed to the basic current has duration of 1.5 ÷ 3.0 µs and is realized by an additional source. The operation and the characteristics of the scheme are investigated by simulations (PSpice) under various modes and loads. The formation and separation of the drop from the end of the electrode is controlled by the amplitude and duration of the pulse current. Thus, the average welding current can be significantly reduced. Dependences of the parameters of pulses on specific components of scheme are derived. Recommendations are made to improve the performance and utilization of the circuit elements and the technological process. Design recommendations are presented to optimize the parameters of the transformer.

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改进参数的脉冲弧焊逆变电流源

脉冲弧焊电源的特点是在主焊接电流上叠加具有一定形状、大小和频率的电流脉冲。本文的目的是探索通过改进参数的特定(附加)焊接逆变电流源来控制叠加脉冲参数的可能性。叠加到基流上的电流脉冲持续时间为1.5µs ÷ 3.0µs，由附加源实现。通过仿真(PSpice)研究了该方案在各种模式和载荷下的运行情况和特性。电极末端液滴的形成和分离由脉冲电流的幅度和持续时间控制。因此，平均焊接电流可以显著降低。导出了脉冲参数与方案特定分量的关系。提出了改进电路元件性能和利用率以及工艺流程的建议。提出了优化变压器参数的设计建议。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2017 40th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO)

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