Reduction of Electric Power Consumption by Freight Mainline Locomotives 2(3)ES5S According to Operational Trial Results

Purpose: To evaluate the reduction in power specific consumption by freight mainline loco-motives 2(3)ES5S when operating power-efficient mode (automatic speed control com-bination with discrete-adaptive switch on/off of Traction Electric Drive depending on an in-stantaneous load), obtained from results operational tests. Methods: Array records analysis on-board recorder made it possible to establish nature dependence locomotive efficiency degree its consumption. Way for controlling multi-engine traction electric drive has been developed and patented. Computer modeling allowed obtain preliminary estimate increase efficiency. Speed au-tomatic controller block is built using finite automation theory method. The proposed changes, aimed at improvement, have introduced into top-level con-trol system. Final ratings during trials. Results: two trips about 7-thousand-ton mass trains along section hilly profile 108 km length presented. Ceteris paribus, second trip, was (discrete-adaptive number combination automatic control), achieved 25% comparison first trip all 12 motors were constantly working. Practical importance: Long-term development program JSC Russian Railways provides cost consistent reduc-tion that’s a purchased (consumed) product. In particular, optimization planned such direction as reducing fuel train trac-tion.