DC power feeding system for railwaysPWM Converter
Constant voltage control and regenerative power control in the DC feeding system.
Product Features
This unit enables the constant voltage control in case of the sudden load fluctuations and return the regenerative power from electric train to the AC side by inverting the power. In this way, it controls the cross flow current flowing between substations.
- The electric train in powering: it maintains reference value (DC 1500 V) of DC voltage.
- Train during regenerative operation: This is to control the lateral flow current flowing between the substations, increase the increased DC output voltage.
- The gate signal is generated as the AC input voltage command value for converter by performing the control of DC output control and reactive power compensation at the incoming side at the same time.
Applications and Solutions
This feature is effective for running in the single track section or the repetitive running in the testing track.
Specifications
| Item | Supply example |
|---|---|
| Inverter capacity | 4500 kW Class S (100% continuous, 200% for 2 hrs, 300% for 1 min.) |
| Rated current | Powering operation: 3000 A, Regenerative operation: 2100 A |
| AC supply voltage | 810V |
| DC voltage | 1500V |
| Multiplexing system | Serial multiplexing Single-phase bridge PWM control system |
| Cooling system | Forced air cooling type heat-pipe |
| Accuracy of DC voltage control | Within ±0.5% |
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