A two-stage power converter for welding applications with increased efficiency and reduced filtering
The power supply technology used in welding applications changed dramatically from manually tap-controlled 50Hz bulky transformers which had large leakage inductance to provide stable arc burn to switch-mode fast controlled highfrequency power electronics. Nowadays, the typical converter configurati...
| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Published: |
2008
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| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/34833/ |
| _version_ | 1848794945236762624 |
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| author | Klumpner, Christian Corbridge, Mathew |
| author_facet | Klumpner, Christian Corbridge, Mathew |
| author_sort | Klumpner, Christian |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The power supply technology used in welding applications changed dramatically from manually tap-controlled 50Hz bulky transformers which had large leakage inductance to provide stable arc burn to switch-mode fast controlled highfrequency power electronics. Nowadays, the typical converter configuration consist of a diode rectifier supplying via a large electrolytic capacitor a smooth DC-link voltage to a high switching frequency H-bridge inverter that steps down the voltage and provides isolation via a high frequency transformer whilst operating with adjustable dutycycle to maintain the output current constant. This topology allows for important size reduction since the size of magnetics decreases rapidly with the increase of the frequency. This paper proposes a more complex two-stage configuration with a buck DC/DC converter operating at a reduced switching frequency to feed adjustable voltage to an H-bridge inverter, which is operating always with the required voltage at 50% dutycycle, enabling in addition the minimization of the output filter size and of the switching losses. |
| first_indexed | 2025-11-14T19:24:15Z |
| format | Conference or Workshop Item |
| id | nottingham-34833 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:24:15Z |
| publishDate | 2008 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-348332020-05-04T16:27:25Z https://eprints.nottingham.ac.uk/34833/ A two-stage power converter for welding applications with increased efficiency and reduced filtering Klumpner, Christian Corbridge, Mathew The power supply technology used in welding applications changed dramatically from manually tap-controlled 50Hz bulky transformers which had large leakage inductance to provide stable arc burn to switch-mode fast controlled highfrequency power electronics. Nowadays, the typical converter configuration consist of a diode rectifier supplying via a large electrolytic capacitor a smooth DC-link voltage to a high switching frequency H-bridge inverter that steps down the voltage and provides isolation via a high frequency transformer whilst operating with adjustable dutycycle to maintain the output current constant. This topology allows for important size reduction since the size of magnetics decreases rapidly with the increase of the frequency. This paper proposes a more complex two-stage configuration with a buck DC/DC converter operating at a reduced switching frequency to feed adjustable voltage to an H-bridge inverter, which is operating always with the required voltage at 50% dutycycle, enabling in addition the minimization of the output filter size and of the switching losses. 2008-03-05 Conference or Workshop Item PeerReviewed Klumpner, Christian and Corbridge, Mathew (2008) A two-stage power converter for welding applications with increased efficiency and reduced filtering. In: 2008 IEEE International Symposium on Industrial Electronics (ISIE 2008), 30 Jun-2 Jul 2008, Cambridge, UK. Electrolytic Capacitors Invertors Power Convertors Power Supplies to Apparatus Rectifying Circuits Welding http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4677248 10.1109/ISIE.2008.4677248 10.1109/ISIE.2008.4677248 10.1109/ISIE.2008.4677248 |
| spellingShingle | Electrolytic Capacitors Invertors Power Convertors Power Supplies to Apparatus Rectifying Circuits Welding Klumpner, Christian Corbridge, Mathew A two-stage power converter for welding applications with increased efficiency and reduced filtering |
| title | A two-stage power converter for welding applications with increased efficiency and reduced filtering |
| title_full | A two-stage power converter for welding applications with increased efficiency and reduced filtering |
| title_fullStr | A two-stage power converter for welding applications with increased efficiency and reduced filtering |
| title_full_unstemmed | A two-stage power converter for welding applications with increased efficiency and reduced filtering |
| title_short | A two-stage power converter for welding applications with increased efficiency and reduced filtering |
| title_sort | two-stage power converter for welding applications with increased efficiency and reduced filtering |
| topic | Electrolytic Capacitors Invertors Power Convertors Power Supplies to Apparatus Rectifying Circuits Welding |
| url | https://eprints.nottingham.ac.uk/34833/ https://eprints.nottingham.ac.uk/34833/ https://eprints.nottingham.ac.uk/34833/ |