Load-resonant converter with changing resonant tank topology for welding applications

Shklovski, J.; Janson, Kuno; Kallaste, Ants

doi:10.1109/iecon.2012.6388771

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…It is shown that a particular combination of the LCC resonant tank behaves as a constant current source at 1:4x n (where x n is the normalised switching frequency). Jevgeni Shklovski et al proposed a resonant converter with changing resonant tank configuration [7]. In [8], a twofrequency load-resonant converter is proposed.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of efficient SiC-based load-resonant converter with advanced features for arc welding applications

et al. 2021

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This letter presents a novel and efficient SiC-based harmonic-current-assisted LCC load-resonant converter for arc welding applications. A higher OCV, required for arc strike, can be obtained by using the harmonic gain of the resonant network at no-load condition. Resonant elements have been designed to reduce the input DC voltage to about half compared to that in a quasi-resonant converter. This reduces the core losses of the isolation transformer. The efficiency of the converter is further increased by ensuring ZVS operation of the switching devices, irrespective of load variations. The self inductance of the lead wires make the selection of the resonant elements an interesting exercise. A Finite element (FE) based simulation is used to determine the leakage inductance. The converter is fabricated in the laboratory and the experiments are conducted up to 1.0 kW load. Excellent mutual agreement between simulated and experimental results upholds the accuracy of the FE modelling and estimation of the lead inductances with the preciseness of the experimental set-up.

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Section: Introductionmentioning

confidence: 99%

Analysis and design of efficient SiC-based load-resonant converter with advanced features for arc welding applications

et al. 2021

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“…Arc welding is an application where resonant converters successfully deal with high current and arc stability [3][4][5][6]. The high output impedance of the resonant tank imposes the shortterm stability of the arc while preserving a fast dynamic response, adequate to implement a fast output current modulation to create pulsating modes.…”

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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Design, analysis and experimental validation of a variable frequency silicon carbide-based resonant-converter for welding applications

Kar

Sengupta

2021

Sādhanā

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Load-resonant converter with changing resonant tank topology for welding applications

Cited by 4 publications

References 6 publications

Analysis and design of efficient SiC-based load-resonant converter with advanced features for arc welding applications

Analysis and design of efficient SiC-based load-resonant converter with advanced features for arc welding applications

Unfolded resonant converter with current doubler structure module for welding applications

Design, analysis and experimental validation of a variable frequency silicon carbide-based resonant-converter for welding applications

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