Hydrogen division

DC power for electrolysers.

Thyristor and IGBT chopper rectifiers for PEM and alkaline electrolysers, from 250 kW units to 15 MW blocks, fed from the grid or from solar and wind. The thyristor technology has run in naval dockyards since 2010.

Request a quote Hydrogen catalogue (PDF)

and 1,200 V DC per thyristor unit: Up to 10,000 A
per IGBT chopper block: Up to 15 MW
pulse configurations: 6, 12, 24
containerised rectifiers for a green hydrogen pilot: 2 × 558 kW

IGBT chopper rectifier and thyristor rectifier cabinets

Hydrogen products

Products

Hydrogen rectifiers

Rectifiers for green hydrogen

Hydrogen rectifiers

High-current rectifiers that turn grid or renewable AC into the steady DC an electrolyser stack needs, in IGBT chopper and thyristor technology, from 250 kW to 15 MW blocks.

Units from 250 kW, blocks to 15 MW. Alkaline and PEM, grid or renewable fed.

Applications

Where it is used

See how each sector uses our equipment on the industries page

PEM electrolyser plants
Alkaline electrolyser plants
Green hydrogen pilots and mobility projects
Utility-scale green hydrogen production
Electroplating and other DC processes
Load testing of electrolyser rectifiers

Featured case study · India

Rectifiers for a hydrogen pilot

Two containerised rectifiers feed the electrolysers of a green hydrogen pilot.

Read the case study

Questions

What customers ask about hydrogen

Thyristor or IGBT rectifier?

Thyristor rectifiers are proven at MW scale and the simplest to maintain. IGBT chopper rectifiers give lower DC ripple and faster regulation in select ratings. Our article compares the two point by point.

Do your rectifiers need air conditioning?

Our thyristor rectifiers do not. Forced air cooling removes the need for air conditioning; outdoor units run up to 50 °C (indoor 45 °C) without output derating.

Which electrolysers do you support?

Both PEM and alkaline electrolyser plants.

Videos