Power Selection for Braking Resistor of Metro Vehicle for Shenyang Metro Line No. 1

For the power selection for braking resistor of metro vehicle for Shenyang metro line No.1,two schemes have been proposed by the supplier,complete absorption at 75 km/h~0 with equivalent efficiency,as well as partial absorption at 80 km/h~65 km/h and complete absorption at 65 km/h~0 with equivalent efficiency.The powers of the braking resistor are 91 kW and 115 kW respectively.Detailed analysis are made to the two schemes,which provides the basis for type selection.In the end the scheme with 91 kW is selected.