External characteristics of spot welding machines of high-frequency with rectifiers in the secondary tuned circuit

摘要

Spot welding machine, powered from frequency converter and (inverter), with rectifier in the secondary tuned circuit was considered. The equations, describing the process of valve switching taking into account the peculiarities of magneticcoupling between transformer winding and non-linear voltage drop on the valves were given. The expediency of the account of these peculiarities in calculation of external characteristics of machines was shown by an example.