20.500.12556/DKUM-15852 EKSPERIMENTALNA DOLOČITEV IZGUB TRANSFORMATORJEV ZA TOČKASTO VARJENJE EXPERIMENTAL DETERMINATION OF LOSSES FOR SPOT WELDING TRANSFORMERS V diplomskem delu so obravnavani transformatorji za točkasto varjenje z enosmernim tokom. Predstavljena sta zgradba in delovanje varilnih transformatorjev za točkasto varjenje ter laboratorijski sistem za preizkušanje le-teh transformatorjev. Opisano je delovanje sistema, kjer so predstavljene težave in rešitve pri obratovanju laboratorijskega sistema. Namen tega diplomskega dela je določitev izgub varilnih transformatorjev z enosmernim tokom. Pri določitvi izgub v železnem jedru transformatorjev je predlagan nov način eksperimentalne ločitve izgub na histerezne in vrtinčne izgube. Prav tako je predstavljen način eksperimentalne ločitve izgub v kratkem stiku. The diploma thesis describes resistance spot welding transformers, which perform the process of welding with DC current. This work presents a structure and working process of the resistance spot welding transformers, as well as the experimental setup for the practical tests. Difficulties that may occur during the working procedure of the laboratory experimental system and solutions to these problems are also one of the major topics described in the diploma. The purpose of the diploma thesis is determination of losses for resistance spot welding transformers, which perform the process of welding with DC current. The losses are determined from results, obtained with measurements. Measurements are carried out with open circuit tests and short circuit tests. The step forward is taken and the new method of how to divide the core losses into hysteresis and eddy current losses is developed. Separation of copper losses during a short circuit test is described as well. določitev izgub eksperimentalna ločitev izgub eksperimentalni sistem električne naprave uporovno točkasto varjenje varilni transformator determination of losses experimental separation of losses experimental system electrical devices resistance spot welding welding transformer true true false [M. Petrun] Slovenski jezik Angleški jezik Diplomsko delo 2010-09-22 13:27:20 2010-12-08 13:52:52 2022-04-13 07:39:32 2023-12-19 03:34:59 2010 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.314.2(043.2) 14771734 URN:SI:UM:DK:XI1GDKED UNI_Petrun_Martin_2010.pdf UNI_Petrun_Martin_2010.pdf 1 E5442F71FF8C0792D45CA78A7FDD95E6 72c5bfd8bfd612cddf13300d892a9a5f0ca8f5b4343417aaebe644efc42cf83e 7ff6e02a-7c04-11eb-bb7a-00155d0001ca 20.500.12556/dkum/cea93f3b-7deb-4247-ab03-82dd7d961e7e https://dk.um.si/Dokument.php?lang=slv&id=19490 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0