Field-circuit modelling of an advanced welding transformer with two parallel rectifiers

Archives of Electrical Engineering

Olga Sakhno¹  Lyudmila Sakhno¹  Simon Dubitsky¹ 

关键词: Arc welding;    double-bridge rectifier;    leakage inductance;    three-winding transformer;    transformer equivalent circuit;   

DOI  :  10.1515/aee-2015-0021

来源: Versita

【 摘 要 】

The new topology of three-winding welding transformer is proposed. Each secondary winding is connected in parallel through the separate bridge rectifier to the welding arc. The main feature of the proposed device is parallel working of two secondary windings with different rated voltage. The advantage is nonlinear transformation ratio of current that provides unprecedented power efficiency. The self- and mutual leakage inductances, which are important in power conversion, are calculated by 2D FEA model. The operational current of the device is modelled numerically via P-Spice simulator. The proposed topology is up to 30% more power effective than conventional welding transformer provided that the leakage inductances of primary and secondary windings are correctly fitted. This transformer is used for manual arc welding

【 授权许可】

Unknown