Development and Research of a Medium Frequency Transformer for an Invertor Power Supply of a Rail Welding Machine

The paper analyzes the skin effect in Bosch PSG 3050.10A medium-frequency transformer, which is installed in the inverter power source of the rail welding machine. It is shown that local overheating in the primary winding of this transformer during machine testing occurs due to a strong skin effect in the windings. The new design of transformer is proposed for which the skin effect is less than in Bosch PSG 3050.10A transformer. The losses in the primary winding are reduced by 26% as compared with Bosch PSG 3050.10A.