REGENERATIVE DRIVE FOR SUBWAY TRAINS. PART 2: OVERALL SYSTEM MODEL

The external system (track, vehicle) for the regenerative drive study is modeled from actual construction drawings and performance specifications. A general duty cycle is constructed and found to compare within a few percent of actual measured data; furthermore, the duty cycle simulates all vehicle operational modes ("all out," cruise, coast, brake). Vehicle dynamics are simulated using current railroad engineering practice; the equivalent mass of rotational elements (transmissions, rotors), about 16 percent of the vehicle curb mass, is accounted for in the accelerated state. The internal d.c. electric drive system is modeled using current industrial design practice; the technique of energy flow-through efficiencies facilitates the determination of vehicle station-station tractive requirements.

• Supplemental Notes:
  • Presented at the 1976 Joint ASME/IEEE Railroad Technical Conference, Chicago, Illinois, April 6-8, 1976.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Suokas, L A
  • Flanagan, R C
• Publication Date: 1976-1

Media Info

• Features: Figures; References; Tables;
• Pagination: 7 p.

Subject/Index Terms

• TRT Terms: Braking performance; Electric brakes; Electric power; Electric power conditioning; Electrical systems; Energy storage systems; Flywheels; Mathematical models; Propulsion; Rapid transit cars; Regenerative braking; Simulation
• Subject Areas: Energy; Public Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00131631
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: 76-RT-2
• Files: TRIS
• Created Date: May 14 1981 12:00AM