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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 backstage 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.
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来源 :
China Welding (English Edition)
ISSN: 1004-5341
年份: 2006
期: 1
卷: 15
页码: 53-56
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