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ZHONG Qiming, XIE Fangxiang, WANG Zhenmin. Research of a novel double-pulsed MIG welding power supply[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(7): 94-99. DOI: 10.12073/j.hjxb.2019400188
Citation: ZHONG Qiming, XIE Fangxiang, WANG Zhenmin. Research of a novel double-pulsed MIG welding power supply[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(7): 94-99. DOI: 10.12073/j.hjxb.2019400188

Research of a novel double-pulsed MIG welding power supply

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  • Received Date: August 21, 2018
  • In order to improve the overall performance of double-pulsed MIG welding equipment, a novel welding power is developed based on silicon carbide power devices. The inverting frequency is up to 100 kHz, which is beneficial to precisely control welding arc. Control circuit of the proposed welding power is composed of the main control circuit, a digital panel, wire feeder control circuit, in which STM32F405RGT6 is the control core. A corresponding control software is designed according to double-pulsed MIG welding task requirements. The incremental PID algorithm is used to control the output and double-pulsed welding is realized by single pulse output with pulsating wire feeding. Test result shows that the proposed welding power supply has a fast-dynamic response, which can effectively cooperate with the pulsating wire feeding to weld. The fish scales of the weld are clear without obvious defects.
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