吉林大学学报(工学版) ›› 2009, Vol. 39 ›› Issue (增刊2): 306-0310.

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Three-phase PFC of arc welding power supply under deadbeat of SVPWM mode based on dynamic load

BAI Zhi-fan,SHEN Yue,ZHANG Yong-hao,MIN Zhuang   

  1. College of Materials Science and Engineering, Jilin University|Changchun 130022|China
  • Received:2008-12-11 Online:2009-09-30 Published:2009-09-30

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Abstract:

For three-phase large welding inverter power supply, three-phase boost topology is introduced as the PFC scheme. With the merits of space vector modulation: digitized control，harmonic decrease，high ratio of voltage used，fast dynamic response and so on，and at the same time deadbeat and DSP control is introduced, as well as two-loop control of the system，we gained power factor is near unit and current THD is well below 10% in our digitized arc welding power system.

Key words: inverter welding power supply , three phase PFC, DSP , space vector modulation, dynamic load

CLC Number: 

  • TG434.4
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