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A novel arc welding inverter with unit power factor based on DSP control
作者姓名:陈树君  曾华  杜利  殷树言  陈永刚
作者单位:Department of Mechanical Engineering & Applied Electronics Technology, Beijing University of Technology, Beijing, 100022.
基金项目:The author thanks for the financial support from Committee of Natural Science Research Foundations of China (50075003), Committee of Natural Science Research Foundations of Beijing (3001001), New Star Plan of Science & Technology of Beijing (H020821230120).
摘    要:A novel inverter power source is developed characterized with constant output current and unit power factor input. Digital signal processor ( DSP ) is used to realize power factor correction and control of back-stage inverter bridge of the arc welding inverter. The fore-stage adopts double closed loop proportion and integration (PI) rectifier technique and the back- stage adopts digital pulse width modulation ( PWM) technique. Simulated waves can be obtained in Matlab/Simulink and validated by experiments. Experiments of the prototype showed that the total harmonic distortion (THD) can be controlled within 10% and the power factor is approximate to 1.

关 键 词:弧焊逆变器  功率因数修正  数字信号处理器  谐波  DSP

A novel arc welding inverter with unit power factor based on DSP control
Chen Shujun,Zeng Hua,Du Li,Yin Shuyan,Chen Yonggang.A novel arc welding inverter with unit power factor based on DSP control[J].China Welding,2006,15(1):53-56.
Authors:Chen Shujun  Zeng Hua  Du Li  Yin Shuyan  Chen Yonggang
Abstract:A novel inverter power source is developed characterized with constant output current and unit power factor input. Digital signal processor (DSP) is used to realize power factor correction and control of back-stage inverter bridge of the arc welding inverter. The fore-stage adopts double closed loop proportion and integration (PI) rectifier technique and the back-stage adopts digital pulse width modulation (PWM) technique. Simulated waves can be obtained in Matlab/Simulink and validated by experiments. Experiments of the prototype showed that the total harmonic distortion (THD) can be controlled within 10% and the power factor is approximate to 1.
Keywords:arc welding inverter  power factor correction (PFC)  digital signal processor (DSP)  harmonic
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