Abstract
AbstractThe paper is devoted to analysis of power losses in a resistance welding machine including supplying system and examination of welding conditions of the welding machine current in a case of synchronous (simultaneous) operation of multiple welding machines, i.e., during the conduction of welding current. Analysis of the most important contributors of power losses generated on the current path between a power source and the welded joint is carried out. The analysis is carried out for a DC (direct current) welding machine with power electronics inverter. AC (alternating current) welding machines are also taken into account. The analysis is divided in two parts. The first one is the analysis of single welding machine operation, while in the second part, coexistence (mutual operation) of two synchronous welding machines is considered. The analysis is based on results of numerical and experimental investigations. The first one is focused on calculation of power losses in the energy path (including a Sankey type power loss distribution diagrams), and the second one is based on experimental tests carried out to determine the diameter of the weld nugget and the strength of the joints, for cases of reducing the welding current. An example of simultaneous operation of welding machines was presented and discussed. The percentage voltage drops and power losses in the entire power supply path of the resistance welder are shown. The analysis carried out is extremely important from this point quality of welded joints.
Publisher
Springer Science and Business Media LLC
Reference30 articles.
1. Stępień M, Mikno Z, Grzesik B (2019) Experimental determination of efficiency and power losses in resistance welding machines, 2019 Electric Power Quality and Supply Reliability Conference (PQ) & 2019 Symposium on Electrical Engineering and Mechatronics (SEEM), Kärdla, Estonia, pp 1–4. https://doi.org/10.1109/PQ.2019.8818228
2. Wei L, Eugene F, Cerjanec D, Grzadzinski G (2004) Energy consumption In: ac and mfdc resistance spot welding, sheet metal welding conference XI, May 11–14, 2004, Sterling Heights, MI, USA. https://www.weldtechcorp.com/documentation/smwc2004/SWMC3-4.pdf. Accessed 26 Feb 2024
3. Gelman V (2013) Thyristor controlled rectifiers (TCR) for traction - problems and solutions , 2013 3rd international conference on electric power and energy conversion systems (EPECS 2013). Istanbul, Turkey, pp 1–6. https://doi.org/10.1109/EPECS.2013.6713078
4. Wei L, Cerjanec D (2008) A comparative study of AC and MFDC resistance spot welding, ASME 2004 International Mechanical Engineering Congress and Exposition, IMECE2004-59554. Anaheim, California, USA, pp 99–105. https://doi.org/10.1115/IMECE2004-59554
5. Mokrov O, Simon MS, Sharma R, Reisgen U (2021) Simplified surface heat source distribution for GMAW process simulation based on the EDACC principle. Weld World 65:745–752