全数字大功率交流脉冲埋弧焊接电源

doi:10.3901/JME.2023.02.096

机械工程学报 ›› 2023, Vol. 59 ›› Issue (2): 96-103.doi: 10.3901/JME.2023.02.096

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全数字大功率交流脉冲埋弧焊接电源

王振民^1,2, 唐嘉健¹, 潘晓浩³, 饶杰¹, 林三宝², 徐孟嘉^1,2

1. 华南理工大学机械与汽车工程学院广州 510640;
2. 哈尔滨工业大学先进焊接与连接国家重点实验室哈尔滨 150001;
3. 北京时代科技股份有限公司北京 100094

收稿日期:2021-09-25 修回日期:2022-05-21 发布日期:2023-03-30
通讯作者: 徐孟嘉(通信作者),女,1984年出生,博士,讲师。主要研究方向为先进焊接工艺。E-mail:xumj@scut.edu.cn
作者简介:王振民,男,1974年出生,博士,教授,博士研究生导师。主要研究方向为焊接电源及其智能控制。E-mail:wangzhm@scut.edu.cn
基金资助:
国家自然科学基金（51875212）、广州市国际合作（201807010035，2019070110006）、深圳市技术攻关（JSGG20191118102201716，JSGG20191129094612348）和先进焊接与连接国家重点实验室开放课题（AWJ21Z03）资助项目。

Digital High-power AC-Pulse Submerged Arc Welding Power Source

WANG Zhenmin^1,2, TANG Jiajian¹, PAN Xiaohao³, RAO Jie¹, LIN Sanbao², XU Mengjia^1,2

1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640;
2. School of State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001;
3. Beijing Times Technology Corporation Limited, Beijing 100094

Received:2021-09-25 Revised:2022-05-21 Published:2023-03-30

摘要/Abstract

摘要： 为改善埋弧焊的焊接质量，结合脉冲焊接和交流焊接两者优势，提出一种交流脉冲埋弧焊焊接方法，并研制了一台大功率交流脉冲埋弧焊接电源。功率变换电路采用双主电路并联设计，可实现1 250 A交流脉冲电流输出；主电路次级采用耦合电感结构，加快交流过零点速度并提高极性切换时的电弧稳定性；搭建了以STM32F405RGT6芯片为核心的数字化控制系统，通过多特性数字均流策略实现了双主电路的可靠均流和多种电流波形的平稳输出，采用分离式增量PID算法进一步提升动态响应性能。工艺试验结果表明，在同等的焊接条件和交流参数下，交流脉冲埋弧焊比交流方波埋弧焊可获得更深的熔深、更宽的熔宽以及更细化的焊缝晶粒。

关键词: 埋弧焊, 交流脉冲, 数字化, 多路均流

Abstract: In order to improve the welding quality of submerged arc welding, combining the advantages of pulse welding and AC welding, a welding method of AC-Pulse submerged arc welding is proposed, and a high-power AC-Pulse submerged arc welding power source is developed. The power conversion circuit is designed in parallel with two main circuits, which can achieve 1250A AC pulse current output. The secondary circuit adopts coupling inductance structure to accelerate the speed of AC zero-crossing and improve the stability during polarity switching. A digital control system with STM32F405RGT6 chip as the core is built. Through the multi-characteristic digital current sharing strategy, the reliable current sharing of dual main circuits and the stable output of various current waveforms are realized. The discrete incremental PID algorithm is used to improve the dynamic response performance. The process test results show that under the same welding conditions and AC parameters, compared with AC square wave submerged arc welding, AC-Pulse submerged arc welding can obtain larger weld depth and weld width and smaller weld grains.

Key words: submerged arc welding, variable polarity pulse, digital welding power source, multi-channel current sharing

中图分类号:

TG439

王振民, 唐嘉健, 潘晓浩, 饶杰, 林三宝, 徐孟嘉. 全数字大功率交流脉冲埋弧焊接电源[J]. 机械工程学报, 2023, 59(2): 96-103.

WANG Zhenmin, TANG Jiajian, PAN Xiaohao, RAO Jie, LIN Sanbao, XU Mengjia. Digital High-power AC-Pulse Submerged Arc Welding Power Source[J]. Journal of Mechanical Engineering, 2023, 59(2): 96-103.

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全数字大功率交流脉冲埋弧焊接电源

Digital High-power AC-Pulse Submerged Arc Welding Power Source

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