A Novel Inverter for Arc Welding Machines

Wang, Jianmin; Wu, Sen‐Tung

doi:10.1109/tie.2014.2348942

Cited by 21 publications

(8 citation statements)

References 17 publications

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“…As described in O'Brien (2004); Norrish (2006); Wang et al (2011); Wang and Wu (2015), inverter welding machines use a series of rectifiers and solid-state switches to convert the AC input supply into DC output, which should provide a high current for welding. Thus, the AC voltage supply (220 V) is rectified and filtered to produce voltage DC (three-phase full bridge rectifier and LC filter).…”

Section: Inverter Welding Machinementioning

confidence: 99%

Power Quality Study and Analysis of Different Arc Welding Machines

Moreira

Silva

Paredes

2018

J Control Autom Electr Syst

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Electrical welding machines are among the most pollutant loads due to their strong nonlinear behavior. As a result, utilities have established new criteria for connecting welding machines in the grid. One approach that can provide good results in this context is based on modeling this special load and performing simulation studies. In this paper, two different computational models were developed in PSCAD/EMTDC to help the connection evaluation process and power quality studies. Furthermore, instead of a conventional power quality analysis, a power theory for non-sinusoidal voltages and currents is needed to analyze three-phase welding machines. The conservative power theory (CPT) allows an advanced analysis of the load's characteristics as it decouples the power factor into different load conformity factors that are associated with specific characteristics in the load. The analysis and discussions are based on simulations and experimental measurements obtained at the terminals of two different welding machines. The results help to demonstrate the main advantage of the CPT compared to conventional approaches, which is related to its general application for single-phase and three-phase disturbing loads under non-ideal supply voltage conditions. Keywords Conservative power theory • Harmonics • Modeling • Nonlinear loads • Power quality • Welding machine 1 Introduction Welding machines are based on the Joule effect; that is, they use the heat dissipated by a current circulation so as to join two metal parts. This requires the passage of a very high current value, and for this reason, welding machines usually use a step-down transformer in order to reduce the applied voltage to very low values. These loads can be directly con-B Alexandre C. Moreira

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Section: Inverter Welding Machinementioning

confidence: 99%

Power Quality Study and Analysis of Different Arc Welding Machines

Moreira

Silva

Paredes

2018

J Control Autom Electr Syst

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“…To mitigate this problem, resonant converter technology is an appropriate solution [1][2][3][4][5]. Several wellestablished resonant converter topologies are used in specific applications such as induction heating [6,7], lighting [8], and electric welding [9]. In addition, new resonant topologies are being recently developed for emerging applications including electric vehicles and charging systems [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Analysis, design and implementation of a DC/DC boost resonant‐inductor converter with sliding‐mode control

Momeneh

Castilla²,

Ghahderijani³

et al. 2018

IET Power Electronics

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Modern DC-DC resonant converters are normally build around a voltage-source series-resonant converter. This study aims to facilitate the practical use of current-source parallel-resonant converters due to their outstanding properties. To this end, the study presents a sliding-mode control scheme, which provides the following features to the closed-loop system: 1) high robustness to external disturbances and parameter variations and 2) fast transient response during large and abrupt load changes. In addition, a design procedure for determining the values of the control parameters is presented. The theoretical contributions of the paper are experimentally validated by selected tests on a laboratory prototype.

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“…Operating at constant switching frequency, the total primary transformer current is modulated with the phase displacement between the input voltages to the resonant tanks, achieving zero voltage switching (ZVS) under all load conditions. The secondary rectifier section is designed with a current doubler structure [8][9], also unfolded in two stages connected in parallel at the output to reduce conduction losses. Therefore the transformer connection to the switching structures is series inputs parallel outputs.…”

Section: Introductionmentioning

confidence: 99%

Unfolded resonant converter with current doubler structure module for welding applications

Brañas

Casanueva

Azcondo

2017

2017 11th IEEE International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)

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Abstract-A new multiphase resonant converter arrangement with series dual phase in the primary side and parallel dual current doubler in the secondary side, operating as a phase shift controlled current source is presented. Sharing the voltage and current stress among the active and passive components with a high DC input voltage and arc current motivates this structure, which also uses WBG devices to increase the efficiency at high switching frequency. The resulting module is intended to operate in continuous and pulsating mode and can be parallelized to extend the output arc current rate.

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A Novel Inverter for Arc Welding Machines

Cited by 21 publications

References 17 publications

Power Quality Study and Analysis of Different Arc Welding Machines

Power Quality Study and Analysis of Different Arc Welding Machines

Analysis, design and implementation of a DC/DC boost resonant‐inductor converter with sliding‐mode control

Unfolded resonant converter with current doubler structure module for welding applications

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