Wide voltage input welding power source based on BUCK circuit

LIU Jizhou; LI Shuhui; ZHANG Jingzhang

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Wide voltage input welding power source based on BUCK circuit
Vol. 49, Issue 1, Pages: 54-58(2019)
Published：2019
DOI：
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DOI：

LIU Jizhou, LI Shuhui, ZHANG Jingzhang. Wide voltage input welding power source based on BUCK circuit[J]. Eletric Welding Machine2019, 49(1): 54-58. DOI：

摘要

针对传统逆变式焊接电源只能适用于一种或两种交流电压输入的缺点

设计了一种基于BUCK电路的宽电压输入焊接电源

可以适用于AC 190～440 V输入电压

通过整流滤波得到额定的输出电压。实验结果表明

设计的BUCK电路通过电压反馈调节可以实现宽电压输入

并且焊接输出稳定

避免了传统的"倍压"或者切换主变抽头方式实现多电压输入时因误判而引起的机器损坏问题

提高了焊机的稳定性。

Abstract

As the traditional inverter welding power source can only apply to one or two types of AC voltage input

a wide voltage input welding power source based on BUCK circuit is designed

which can apply to the input voltage of AC 190 V～ AC440 V

and the rated output voltage is obtained by rectifying filtering. The experimental results show that the designed BUCK circuit can realize wide voltage input through voltage feedback adjustment

and the welding output is stable. It avoids the problems of machine damage caused by the traditional "double voltage" or misjudgment when multi-voltage input realized by switching main transformer tap mode

which improves the stability of the welding machine.