Traction electrical equipment for Shinkansen high-speed trains (traction transformer, converter, motors)
The traction system of a Shinkansen high-speed train comprises a main transformer, a main converter with IGBTs and traction induction motors. For the N700A the supply is a 25 kV 60 Hz line, the transformer is rated 5150 kVA and the motors 305 kW. The equipment is supplied for series 0, 100, 300, 700, N700 and N700A trains.
- Example: Shinkansen N700A
- 1-phase supply, 25 kV, 60 Hz
- Main transformer
- 5150 kVA; secondary windings 1520 V, 847 A; tertiary winding 450 kVA
- Main converter
- three-level PWM rectifier + three-level PWM inverter, DC link 3000 V
- IGBT
- 3.3 kV, 1.2 kA; switching frequency 1500 Hz (rectifier), 1000 Hz (inverter, synchronous)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Electrical equipment for Japanese Shinkansen high-speed trains has been supplied since 1964, starting with the first series 0, and also for the traction systems of series 100, 300, 700, N700 and N700A trains. The traction system comprises a main (traction) transformer, a main converter (rectifier-inverter) and traction induction motors. It is built on power electronics and control technologies and designed around the principles of reducing noise for passengers and residents along the line, raising efficiency and cutting energy consumption, reducing mass and dimensions for the limited under-floor space, and maximum reliability with reduced maintenance.
An example is the main circuit of the Shinkansen N700A train. Power is supplied from a single-phase 25 kV 60 Hz overhead line. The main transformer is rated 5150 kVA, with secondary windings of 1520 V, 847 A and a tertiary winding of 450 kVA for auxiliary needs. The main converter consists of a three-level PWM rectifier and a three-level PWM inverter with a 3000 V DC link. The power devices are 3.3 kV 1.2 kA IGBTs, with switching frequencies of 1500 Hz and 1000 Hz respectively. The traction induction motors are rated 305 kW, 2300 V, 100 A, 110 Hz and 3260 rpm (maximum 5720 rpm).
The development of the technology is visible in its history. A diode rectifier with DC motors corresponded to a speed of 210 km/h, a thyristor rectifier to 220 km/h, a GTO converter with induction motors to 270 km/h, and IGBT converters to 285–300 km/h. Next came forced-air-flow cooling and, finally, a converter on SiC devices, which has been tested jointly with JR Central on line runs. The manufacturer produces the power semiconductors for such systems itself: IGBT, hybrid and full SiC modules. The equipment is comparable to traction electrical equipment of AC electric trains and can be considered for high-speed and fast-train projects. For fast-train projects, this overview shows how the traction drive circuit changed from a diode rectifier to IGBT and SiC, and how speed grew along with it.
Technical specifications
| Example: Shinkansen N700A | 1-phase supply, 25 kV, 60 Hz |
|---|---|
| Main transformer | 5150 kVA; secondary windings 1520 V, 847 A; tertiary winding 450 kVA |
| Main converter | three-level PWM rectifier + three-level PWM inverter, DC link 3000 V |
| IGBT | 3.3 kV, 1.2 kA; switching frequency 1500 Hz (rectifier), 1000 Hz (inverter, synchronous) |
| Traction motor | induction, 305 kW, 2300 V, 100 A, 110 Hz, 3260 rpm (max. 5720 rpm) |
| Experience | since 1964 (Shinkansen series 0); series 100, 300, 700, N700, N700A |
| Development | testing of a converter on SiC devices jointly with JR Central |
Request a price and lead time
Traction electrical equipment for Shinkansen high-speed trains (traction transformer, converter, motors). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What are the parameters of the main transformer of the N700A train?
Rated power is 5150 kVA, secondary windings are 1520 V and 847 A, and the tertiary winding is 450 kVA for auxiliary needs. The supply is a single-phase 25 kV 60 Hz line.
What does the main converter consist of?
A three-level PWM rectifier and a three-level PWM inverter with a 3000 V DC link. The power devices are 3.3 kV 1.2 kA IGBTs, with switching frequencies of 1500 and 1000 Hz.
Which traction motors are used in the N700A example?
Induction motors rated 305 kW, 2300 V, 100 A and 110 Hz. The rated speed is 3260 rpm, with a maximum of 5720 rpm.
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