Title :
A novel three-phase welding inverter power supply with high power factor
Author :
Ji-qiang, Huang ; Shu-jun, Chen ; Shu-yan, Yin ; Dong-ping, Wang ; Hua, Zeng
Author_Institution :
Coll. of Mech. Eng. & Appl. Electron. Technol., Beijing Univ. of Technol., China
Abstract :
A three-phase welding inverter power supply (WIPS) with power factor correction (PFC) function is proposed to deal with the input current distortion problem that baffled WIPS application for several years. In this paper, a switch-rectifier is used and controlled by a digital signal processor (DSP) based on space vector modulation (SVM) to replace diode-rectifier of the conventional WIPS. The control strategy to realize PFC function in WIPS is studied. A new two-mode work scheme is proposed to overcome the problems brought by switch-rectifier when WIPS work in open-load period. A new WIPS device with PFC function is constructed and experimented to confirm the validity.
Keywords :
digital signal processing chips; electric welding; invertors; power factor correction; power supply circuits; rectifiers; DSP; currents distortion; digital signal processor; diode rectifier; power factor correction; space vector modulation; switch rectifier; three phase welding inverter power supply; Digital control; Digital modulation; Digital signal processing; Digital signal processors; Inverters; Power factor correction; Power supplies; Reactive power; Support vector machines; Welding;
Conference_Titel :
Industrial Technology, 2003 IEEE International Conference on
Print_ISBN :
0-7803-7852-0
DOI :
10.1109/ICIT.2003.1290819
