Railroads

Power Electronic Equipment for Rolling Stock

Rolling stock use many different types of power electronic equipment such as main motor drives, auxiliary power supply units, air conditioning equipment and door operating devices. This page provides information on Fuji Electric power semiconductor products suitable for the power electronics of railroad cars.

Main Converter Circuit Example

Main Converter Circuit Example

Here is an example of the main motor drive circuit configuration. Voltage may be either AC or DC depending on the configuration. For AC, conversion to DC is made by the PWM converter after passing through the transformer, and then the main motor is driven by the VVVF inverter.

Main Converter Example for AC Powered Trains

Main Converter Example for DC Powered Trains

Feeding Voltage Example

Segment City Railroads Intercity Railroads
Area Subway & LRV Electric trains High-speed vehicles
Europe 600 V DC/750 V DC/825 V DC/1500 V DC 1500 V DC/3000 V DC/15 kV AC/25 kV AC 25 kV AC
Western Europe 600 V DC/750 V DC/1500 V DC 1500 V DC/3000 V DC/15 kV AC/25 kV AC 15 kV AC/25 kVAC
Eastern Europe 600 V DC/750 V DC 1500 V DC/3000 V DC/25 kV AC
CIS 600 V DC/750 V DC/825 V DC/ 1500 V DC/3000 V DC/25 kV AC 25 kV AC
North America 600 V DC/750 V DC 25 kV AC
Central and South America 600 V DC/750 V DC/1500 V DC/3000 V DC 3000 V DC
Asia & Pacific Region 600 V DC/750 V DC/1500 V DC 1500 V DC/20 kV AC/25 kV AC 25 kV AC
Middle East & Africa 750 V DC/1500 V DC 3000 V DC/25 kV AC
Global 750 V DC/1500 V DC 1500 V DC/25 kV AC 25 kV AC

Auxiliary Power Supply Circuit Example

Auxiliary Power Supply Example for AC Powered Trains

Auxiliary Power Supply Example for DC Powered Trains

Segment City Railroads Intercity Railroads
Specifications Subway & LRV Subway Electric trains High-speed vehicles
Specifications Asia spec.
(China, South East Asia)
North America spec.
(NYCT)
Asia spec.
(Australia, Japan)
Global spec.
Input Voltage 750 V DC 600 V DC 1500 V DC 440 V AC
(Main transformer tertiary)
Output Voltage 440 V AC, 3φ, 60Hz 120 V AC, 1φ, 60Hz×15kVA 440 V AC, 3φ, 60Hz 440 V AC, 3φ, 60Hz
37.5 V DC x 20kW
Capacity 90kVA/160kVA 40kVA 180kVA/260kVA 180kVA/210kVA
Cooling System Self-cooling Forced air cooling Self-cooling Forced air cooling
Efficiency More than 95% More than 95% More than 95% More than 95%
Noise 62dB(A) 70dB(A) 62dB(A) 68dB(A)
Miniaturization ≥ 80 kVA/m3 ≥ 100 kVA/m3 ≥ 120 kVA/m3 ≥ 120 kVA/m3

Fuji Electric Power Semiconductor Products

HPM (High Power Modules)

AlSiC Baseplate (High reliability type)

1-pack

2-pack

Cupper Baseplate (Standard type)

1-pack

2-pack

PrimePACK™

Note: ‌PrimePACK™ is a registered trademark of Infineon Technologies AG, Germany.

2-pack

Boost chopper

Down chopper

V-series

V-series 1-pack

V-series 2-pack

V-series Chopper