Metro Train Simulation

Optimum Energy Consumption Run Simulation

Optimal Train Operation for Minimum Energy Consumption Run :

Optimal train speed profile for energy efficient train operation mainly depends upon the maximum allowed speed of the train, acceleration of the train, speed restrictions limit & their locations in the section, track profile ( i.e. track gradients and curves value & their locations in section), service brake deceleration, regeneration capability of the train and the travelling time allowed to complete the journey. If scheduled time to complete the specified journey is more than respective allout run time, propulsion equipment of the train consume less energy compared to the energy consumed in respective allout run mode. Please input the following parameters for Minimum Energy Run simulation :



# NOTE: Please read Para 'Limitations of online Minimum Energy Run Simulation Tool'. This is an online demo simulation tool and results of online minimum energy run simulation tool may have some error due to these limitations. However, our offline software tools do not have such limitations and provide much accurate simulation results. For detailed description of technnical terms used in this simulation tool, please read 'Technical Terms' & 'Performance Parameters' sections of this website.

Tractive Effort vs Speed Graph of Motor Coach :

In the above graph:


OA:
Max. TE per Motor Coach in KN
AB:
Constant Tractive Effort Zone
BC:
Quadrant portion of TE vs Speed graph; wherein, generally TE is inversely proportional of the speed.
CD:
Quadrant portion of TE vs Speed graph; wherein, generally TE is inverse quadratic of the speed.
OE:
Power zone start speed of TE-Sp. graph
OF:
Power zone end speed of TE-Sp. graph
OG:
Value of Max. Reg. BE per Motor Coach in KN
GH:
Constant Regenerative Braking Effort Zone
HI:
Quadrant portion of Reg. BE vs Speed graph; wherein, generally Reg. BE is inversely proportional of the speed.
IJ:
Quadrant portion of Reg. BE vs Speed graph; wherein, generally Reg. BE is inverse quadratic of the speed.
OK:
"Power zone start speed of Reg. BE-Sp. graph
OL:
Power zone end speed of Reg. BE-Sp. graph

Limitations of online Minimum Energy Run Simulation Tool

1.
Level track is considered for simulation. Gradient Resistance & Curve Resistance is not considered.
2.
Effect of speed restrictions can not be calculated.
3.
Jerk effect is not considered.
4.
No Brake activation time is considered.
5.
Starting resistance of train is not considered.
6.
% Regenerated Power, SEC, Current & Power are calculated based on combined propulsion equipment efficiency instead of individual propulsion equipment efficiency.
7.
All shapes of TE vs Speed graph can not be generated in this simulation tool. TE vs Speed graph has two quadrant portion only. In first quadrant, TE is inversely proportional of speed & in second quadrant, TE is inverse quadratic of speed. Other relation between TE and Speed can not be generated.
8.
Single deceleration value is considered in complete service speed range.
9.
To minimize the simulation run time, simulation is carried out for entered intermediate station distance ± 3 meter.
10.
Full traction, coasting followed by full service brake concept is used to calculate energy for minimum energy run.