Title :
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
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;
Conference_Titel :
Electrical, Electronics and Computer Science (SCEECS), 2014 IEEE Students' Conference on
Conference_Location :
Bhopal
Print_ISBN :
978-1-4799-2525-4
DOI :
10.1109/SCEECS.2014.6804420
