A PFC based bridgeless converter with improved power quality for welding applications

Narula, Swati ; Singh, Bhim ; Bhuvaneswari, G. (2015) A PFC based bridgeless converter with improved power quality for welding applications In: IEEE International Conference on Computational Intelligence & Communication Technology (CICT), 2015, 13-14 Feb. 2015, Ghaziabad, India.

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Official URL: http://ieeexplore.ieee.org/document/7078754/

Related URL: http://dx.doi.org/10.1109/CICT.2015.53


A Power Factor Corrected (PFC) two stage, Bridgeless (BL) Cuk converter based switched mode power supply is proposed in this work for arc welding applications. The absence of input Diode Bridge Rectifier (DBR) reduces the conduction losses and improves the thermal utilization of the converter's switches. The front-end comprises of a BL-Cuk converter operating in Discontinuous Conduction Mode (DCM) to attain unity Power Factor (PF) at the AC mains while at the back end, a PWM isolated Full Bridge (FB) DC-DC converter is used to regulate the output DC voltage. The performance of the system is examined in terms of the input PF, Total Harmonic Distortion (THD) of the ac mains current, voltage regulation and robustness. The obtained dynamic characteristics of this proposed topology depicts a constant voltage mode in various ranges of welding currents and inherent parametrical short circuit protection. Simulation results are presented to confirm the effectiveness of the proposed Arc Welding Power Supply (AWPS) in terms of excellent Power Quality (PQ).

Item Type:Conference or Workshop Item (Paper)
Source:Copyright of this article belongs to Institute of Electrical and Electronics Engineers.
Keywords:Cuk Converter; Arc Welding Power Supply; Bridgeless; Power Quality; Total Harmonic Distortion
ID Code:109736
Deposited On:04 Aug 2017 11:20
Last Modified:04 Aug 2017 11:20

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