Analysis and verification of key technologies for traction converter of plateau dual-source power centralized diesel multiple units
According to the characteristics of plateau diesel locomotives,i.e.high operating altitude,complex heat dissipation con-ditions and high lightweight requirement,this paper introduces the main circuit structure,working principle and design method for the traction converter of Fuxing plateau dual-source power centralized diesel multiple units(DMU).For high operating altitude,the in-cabi-net electrical insulation performance was strengthened by the altitude correction method;for complex heat dissipation conditions,a rea-sonable cooling scheme was selected and the detailed thermal design for the loss and heat dissipation capability of the whole cabinet was carried out to ensure its heat dissipation capability;for high lightweight requirement,the modular layout and finite element structural sim-ulation method were used to ensure the structural strength and realize lightweight design at the same time.The tests show that the trac-tion converter can meet the requirements of all performance indicators.
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