Modified Bridgeless PFC-Based Cuk-Sepic Converter With Improved Power Quality for Arc Welding Applications

Abstract

The novel single-phase Cuk and Sepic power factor correction converter attracted toward arc welding application is highlighted in this paper. The preferred converter is outlined to function in DCM concealed by variations in load voltage and supply voltage to ensure better performance. The control strategy includes a voltage loop, which ensures arc welding process stability and improved input power quality. The designed system is validated with a hardware prototype of 100 W, 48 V, and Matlab/Simulink is used to simulate the arc welding power supply under different working conditions. The reduced input line total harmonic distortion of 1.527% with unity power factor is attained for the rated load in the investigational study. The experimental performance of the propounded converter is bestowed with operating conditions of AC mains (90–270 V) to cohere to the limits delineated by the IEC61000-3-2 standards.

KEYWORDS:

• Arc welding
• Cuk–Sepic converter
• Discontinuous conduction mode
• Power factor correction
• Power quality improvement
• Total harmonic distortion

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

M. Shunmathi

M Shunmathi received the BE degree in 2016 and ME degree in 2018 with first class with distinction from Anna University Chennai, Tamil Nadu, India. She is currently pursuing her PhD at Anna University, Chennai. She has published papers in international journals and conferences. Her research interest includes power electronics and hybrid vehicles. Email: [email protected]

J. Gnanavadivel

J Gnanavadivel received the BE degree in electrical and electronics engineering from Madras University and the ME degree in power electronics and drives from Bharathidhasan University. He completed PhD degree in electrical engineering from Anna University, Chennai. He is a working associate professor at Mepco Schlenk Engineering College, Sivakasi, India. He has published research papers in international journals and conferences. His research area includes power converters, power quality, intelligent controllers and electrical drives. Corresponding author. Email: [email protected]