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

Volume

2

fYear

2003

fDate

10-12 Dec. 2003

Firstpage

1113

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology, 2003 IEEE International Conference on

Print_ISBN

0-7803-7852-0

Type

conf

DOI

10.1109/ICIT.2003.1290819

Filename

1290819