After reading the article “WHAT IS MFDC WELDING” a reader asked for more detail on how the transformer performs in this process. This blog does not go into specific equipment detail but there is another article which has more detail of the functions of the MFDC control and transformer:
IS THERE A DIFFERENCE BETWEEN MFDC AND AC RESISTANCE WELDING TRANSFORMERS?
This articles answers the question of how the MFDC transformer functions and how it handles the voltage and current.
Schematic of Power Conersionin Control and Transformer of Mid Frequency Inverter
Reference: Entron Controls, LLC