Isolated bridgeless converter for welding power supply with improved power quality

Author

Narula, Swati ; Bhuvaneswari, G. ; Singh, Bhim

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi, New Delhi, India

fYear

2014

fDate

1-2 March 2014

Firstpage

1

Lastpage

6

Abstract

This paper presents a single-stage isolated bridgeless Full Bridge (FB) converter based Arc Welding Power Supply (AWPS). The proposed topology incorporates a bridgeless Power Factor Correction (PFC) converter using Discontinuous Conduction Mode (DCM) operation of the boost rectifier and FB DC-DC converter to ensure unity power factor at input AC mains. The DCM operation substantially reduces the complexity of the control. The efficient control of AWPS facilitates fast dynamic response which enables to achieve high quality weld. Eliminating input side diode bridge rectifier reduces the number of components and minimizes the conduction losses. The analysis, design and simulation results of the isolated bridgeless converter based AWPS are presented and discussed in detail.

Keywords

DC-DC power convertors; arc welding; power factor correction; power supply quality; AWPS; DCM operation; FB DC-DC converter; arc welding power supply; boost rectifier; bridgeless PFC converter; bridgeless power factor correction converter; discontinuous conduction mode operation; dynamic response; input AC mains; input side diode bridge rectifier; single-stage isolated bridgeless full bridge converter; unity power factor; AC-DC power converters; Capacitors; Inductors; Power supplies; Switches; Voltage control; Welding; Bridgeless; High Frequency Isolation; Power Quality; Total Harmonic Distortion; Welding Power Supply;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical, Electronics and Computer Science (SCEECS), 2014 IEEE Students' Conference on

Conference_Location

Bhopal

Print_ISBN

978-1-4799-2525-4

Type

conf

DOI

10.1109/SCEECS.2014.6804420

Filename

6804420