Multicell-type current regulator based on Cuk converter for resistance welding

Resistance welding technology features are discussed. The ways of improving the efficiency of the system, which consists of energy storage unit, current regulator and welding load, are analyzed. A multiceli structure of the output current regulator with a cell topology based on Cuk converter is suggested. The maximal inductance values of input and output inductors are calculated. Cuk converter efficiency is estimated using its mathematical model. Theoretical considerations are proved with developed Simulink model of current regulator.