Study of Magnetic Flux in the Magnetic Core of the Resistance Spot Welding Transformer

Transformers for high frequency resistance spot welding systems with an output bridge rectifier are considered. These transformers have one primary and one secondary windings, consisting of several disk coils. These transformers never have an idle mode during their working. This feature significantly distinguishes them from power transformers. The nominal operating mode of the transformers is the short circuit mode. This paper gives the simple method of the magnetic flux calculation in the magnetic core in the short circuit mode. These results can be used to save steel in transformer core.