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This paper presents a modular configuration of a three-phase power factor corrected (PFC) arc welding power supply (AWPS) using bridgeless (BL) isolated Cuk converter. Discontinuous inductor current mode operation (DICM) of Cuk converter enables this AWPS to attain unity power factor (PF) inherently at the utility interface. In the proposed BL converter, the diode bridge rectifier (DBR) at the input...
This paper proposes a three-phase single stage power factor corrected (PFC) bridgeless modular zeta converter based switched mode power supply (SMPS) suited for welding applications demanding high current and low voltage at the output. Typically, for high-power welding applications, modular arrangement of converters is suggested to reduce the device rating and provide ease of power expandability as...
In this paper, a single-phase power quality improved switched-mode power supply (SMPS) using bridgeless (BL) canonical switching cell (CSC) converter is analyzed, designed and experimentally tested for welding applications. The elimination of diode bridge rectifier (DBR) at the input leads to reduced conduction losses and high power density thereby improving thermal management. BL-CSC converter functions...
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)...
This paper proposes a power factor corrected (PFC) two stage AC-DC converter suitable for arc welding applications. The proposed circuit is made up of a bridgeless (BL) zeta converter at the front end and full bridge (FB) buck converter for high-frequency isolation. The BL zeta converter eliminates the input diode bridge rectifier (DBR) thereby minimizing the conduction losses. The discontinuous current...
Arc welding is performed using different technologies and most of them employ the welding power converter to form the arc. This paper presents a Power Factor Corrected (PFC), two stage bridgeless (BL) Single Ended Primary Inductance Converter (SEPIC) based switched mode power supply for arc welding applications. The front-end consists of a BL-SEPIC operating in Discontinuous Conduction Mode (DCM)...
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...
A new bridgeless improved power quality based multiple output, cross regulated, high frequency isolated power supply is proposed with power factor correction (PFC) for personal computers (PCs) applications. The design of the proposed power supply is carried out in discontinuous mode of conduction (DCM) to make it simple and compact in size. Two high frequency isolated single ended primary inductance...
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