Battery Electric Multiple Unit
BEMU’s are self-propelled train sets that use electricity from onboard battery power source. They consist of multiple carriages, multiple of them with its own traction motors and control equipment. BEMU’s are slowly gaining popularity as battery storages are becoming more energy dense, safe and cost competitive. BEMU’s mainly function as metro or suburban trains. Medha provides its full suite of traction products and energy storage system for BEMU’s.
Medha’s BEMU solution can be interspersed with DEMU carriages to enable opportunistic switching between Diesel and Battery to reduce pollution in urban regions.
Medha’s BEMU solution can also be equipped with pantograph for opportunistic charging in electrified section of a network.
Features.
System flexibility
Propulsion System: 0.5 to 2.0 MW (per Motor Car)
Full Regeneration capability
High Reliability and Redundancy (with Fail changeover)
Train Configuration: 4 to 18 car consists, 25% to 50% driven axles
Catenary Voltages for opportunistic charging: DC 750 V to 3000 V, AC 15 kV to 25 kV
Traction and Auxiliary Converters
Mounting : Underfloor or Onboard
IGBT Module: 1.7 kV 1200 A/1800 A, 3.3 kV 1200 A/1500 A
Cooling: Natural Cooled, Forced Air Cooled, Liquid Cooled
Enclosure: Mild Steel, Stainless Steel, Aluminium
Train Control & Management System (TCMS)
Propulsion and braking control, HVAC control, passenger information system, door control etc., Communication interface for complete train consist using WTB, MVB, CAN, Ethernet interface
Battery pack, Thermal and Health Management: Battery pack of suitable rating, and integrated systems to monitor and manage battery temperature and health
Image gallery.
