Rectifiers for green hydrogen
Thyristor rectifiers for electrolysers
MW-scale thyristor rectifiers up to 10,000 A and 750 V DC for PEM and alkaline electrolysers.
Overview
What it does
High-power thyristor (SCR) rectifiers that supply stable, well-regulated DC to PEM and alkaline electrolysers, in 6, 12 and 24 pulse designs with galvanically isolated transformers, interphase transformers and filters.
Standard units deliver up to 10,000 A and 750 V DC from a 415 V or medium-voltage supply, with forced air cooling that avoids air conditioning and full output up to 50 °C outdoors.
Modular units can be paralleled for redundancy and expansion, and a PLC with touchscreen HMI provides remote operation and data logging.
Applications
- PEM electrolyser plants
- Alkaline electrolyser plants
- Green hydrogen mobility and pilot projects
- Utility-scale green hydrogen production
Features
Why engineers choose it
- Single-stage conversion for high efficiency
- Galvanically isolated transformer with custom interphase transformers and filters
- Forced air cooling with no need for air conditioning
- Full rated output up to 50 °C outdoors
- Modular units that can be paralleled for redundancy and expansion
- Wide input supply range for harsh tropical conditions
- Protection against over current, short circuit, over voltage and over temperature
- 25-year service life with locally available spares and service
Specifications
Key specifications
Configured to order. Full details are in the datasheet.
| Input supply | 415 V, 50/60 Hz; 6.6 kV / 11 kV / 33 kV on request |
|---|---|
| Output voltage | Up to 750 V DC (up to 1000 V on request); modular range 350–750 V DC |
| Output current | Up to 10,000 A DC (up to 25,000 A on request) |
| Topology | Thyristor (SCR), single-stage conversion; 6, 12 or 24 pulse |
| Regulation | Stepless constant voltage or constant current, 10–100%; ±1% precision |
| Input current THD | 12% / 5% |
| Output ripple | ≤ 2% |
| Duty | Continuous at rated load |
| Cooling | Forced air-cooled; water-cooled on request; air- or oil-cooled isolation transformers |
| Enclosure | Indoor panel, outdoor container or trolley-mounted |
| Max ambient without derating | 45 °C indoor, 50 °C outdoor |
| Control/HMI | PLC with touchscreen HMI; remote operation and data logging |
Typical values. Ratings and options may vary by model; confirm with the latest datasheet.
Get in touch
Request a quote.
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