Auxiliary converters and battery chargers for rolling stock 10–200 kVA, input up to 3000 V
Auxiliary converters and battery chargers for rolling stock supply onboard loads from the overhead catenary or third rail at voltages up to 3000 V. Classic converters deliver 10 to 100 kVA, and the Katium technology reaches 200 kVA. The equipment is installed on trams, metros, suburban and mainline trains, high-speed trains and trolleybuses.
- Input voltage
- up to 3000 V (overhead catenary, third rail): 750, 1500, 3000 V DC
- Output power
- 10–100 kVA (classic); Katium range up to 200 kVA
- Technology
- Katium, multi-cell current source topology with digital input filtering; SiC power switches
- Composition
- auxiliary converters, battery chargers, inverters for HVAC
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Since 1979 the company's power electronics business has supplied power electronics and auxiliary power systems to manufacturers and train operators. The APS auxiliary power supply provides stable regulated voltage for air conditioning and ventilation, compressed air preparation units, lighting and electronics, and also charges the battery. More than 15 thousand systems are in service, and experience from their operation is taken into account in new designs.
The portfolio covers auxiliary converters, which convert 750, 1500 or 3000 V DC catenary or third rail voltage into regulated onboard voltage, and battery chargers. Classic converters have an output from 10 to 100 kVA and work as dedicated or centralized sources. The architecture is selected for the task: it can be a 3+1 phase inverter, a separate HVAC inverter or a distributed system, and all-in-one variants combine the auxiliary converter and the inverter.
The proprietary Katium topology, launched in 2004, is built as a multi-cell current source. It reduces the mass and volume of the converter and performs digital input filtering, so a small inductance replaces a heavy LC filter. The circuit suppresses interference to railway signalling track circuits, does not shut down during voltage dips caused by icing, pantograph loss or arcing, and withstands network overvoltages of any duration. A simplified topology was introduced in 2011, and the Katium SiC version in 2017.
SiC switches have lower switching losses, so the converter is cooled naturally, without a fan. Modules weighing less than 15 kg are quickly replaced, and built-in self-diagnostics points to the faulty one. The units are placed under the underframe, on the roof or inside the car.
Among the projects are the CTA3200 converter for Chicago, and converters and chargers for Regio 2N trains in France and M7 trains in Belgium, where the manufacturer supplies auxiliary converters for 355 cars with an option for 710. Katium also passed a year of demonstration operation on two R160 New York subway trains. Converter competence centers operate in France, Canada, the Czech Republic and the USA, and the new business model provides for energy saving targets agreed jointly with the customer.
Technical specifications
| Input voltage | up to 3000 V (overhead catenary, third rail): 750, 1500, 3000 V DC |
|---|---|
| Output power | 10–100 kVA (classic); Katium range up to 200 kVA |
| Technology | Katium, multi-cell current source topology with digital input filtering; SiC power switches |
| Composition | auxiliary converters, battery chargers, inverters for HVAC |
| Cooling | natural (no fan) with SiC |
| Module mass | under 15 kg |
| Application | trams, metros, suburban and mainline trains, high-speed trains, trolleybuses |
Request a price and lead time
Auxiliary converters and battery chargers for rolling stock 10–200 kVA, input up to 3000 V. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8504 40 88 00 8504 40 82 00 |
|---|---|
| HS, 6 digits | 8504 40 |
| CN (EU) | 8504 40 88 8504 40 82 |
| HTSUS (USA) | 8504 40 95 10 |
| China customs tariff | 8504 40 99 99 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which voltages do the converters operate from?
The input voltage is up to 3000 V from the overhead catenary or third rail, including 750, 1500 and 3000 V DC.
What power do the converters have?
Classic converters have an output from 10 to 100 kVA, and the Katium range reaches 200 kVA.
Which rolling stock is the equipment suitable for?
Trams, metros, suburban and mainline trains, high-speed trains and trolleybuses. The units are placed under the underframe, on the roof or inside the car.
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