CBS-10K Railway compliant DC DC Converter with 10kW peak capability

24th June 2022

CBS-10K Railway compliant DC DC Converter with 10kW peak capability

Relec Electronics proudly announces the availability of CBS-10K series DC-DC Converters from Premium.  The CBS-10K is a single output DC/DC converter that provides a peak power of up to 10kW for up to 40 seconds. Units are available with EN50155 compliant inputs of 24V, 36V, 72V or 110Vdc.

The CBS-10K has primarily been designed to assist with the start up of diesel engines in hybrid electric/diesel trains.

What are Hybrid Electric/Diesel trains

Transportation railway infrastructures are constantly being upgraded to make them more environmentally efficient. Electric traction offers the environmental advantage of substantially reducing CO2 emissions, as well as reducing noise in large cities.

Hybrid trains use a combination of electric motors and diesel combustion engines so that trains can be installed on both electrified and non-electrified tracks (or a combination of the two). They can use either the electric supply or diesel generator, depending on what is available. For example, if the batteries run out whilst running on a non-electrified track, the train can switch to running off the diesel generator.

In both cases the electric motor is responsible for powering the train’s wheels, whilst the diesel combustion engine powers a set of batteries and the electric motor, essentially acting as a power generator.

The device can be installed inside the train to transform the battery voltage (110Vdc) to a higher voltage direct current (DC) bus (500Vdc). The train in catenary operation supplies power to all systems through the DC/DC converter (1500/500Vdc).

Where catenaries are electrified, energy regeneration during braking may not be allowed, which means not only having to run in diesel mode but also hybrid mode. The use of batteries also allows the catenary voltage to be reduced, as during peak energy demand (accelerations) the battery will take care of the operation.

If there is a catenary failure, the CBS-10K DC/DC converter will use the battery voltage to feed the bidirectional rectifier through the 500Vdc bus, which will act as an inverter, feeding the alternator (engine in this case) so that the diesel generator starts.

Key features of the CBS-10K series are…

  • Up to 10kW during 40s
  • 6kW average
  • 500Vdc output (up to 700V under request)
  • High input-output isolation (5000 Vrms)
  • O-ring output diode up to 2000V
  • 24Vdc, 48Vdc, 72Vdc, 110Vdc input voltage models
  • Parallelizable
  • Remote control via RS232
  • Optional CAN BUS
  • High power density
  • Alarm by isolated relay contacts
  • Up to 95% efficiency
  • 200.000 h MTBF (according to IEC61709, SN29500 @40°C)

CBS-10K Railway compliant DC DC Converter with 10kW peak capability

CBS-10K Series

Input: 24/36/72/110Vdc
Outputs: 500Vdc nom
Power: 6000W nom, 10000W pk
Tamb: -40 to 55°C (full load)
Dims: 455 x 217 x 85mm
Conforms to EN62368 / EN50155

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Here at Relec Electronics, we have worked closely with our key suppliers for over 40 years. We specialise in many industries, including; automotive, industrial, transportation, instrumentation & defence. We have a team of dedicated engineers ready to support you throughout the design process. We also carry stock of all standard modules and accessories for next day delivery.

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