Hydrogen solutions

The green hydrogen challenge

Rectifier systems for large-scale electrolysis

At FRIEM, we design and manufacture high-quality power supply units (PSUs) to power electrolysers for green hydrogen production. Being robust, efficient and purpose-built, FRIEM PSU pairs with the main electrolytic cells’ technologies (alkaline, PEM and SOEC).

It can be delivered fully equipped with a rectifier transformer, DC no load isolators, a thyristor rectifier, automatic harmonic filters, a heat exchanger, polarisation rectifier, cooling cabinet and control cabinet, a power factor compensation and harmonic filtering system (depending on power quality requirements).

For a minimised footprint and simplified on-site setup, we offer containerised or skid-mounted PSUs, fully assembled and ready for use.

Features of our solutions

Plug and play solution

Completely assembled and wired units reduce the time taken for installation and commissioning on site.

Low impact on the supply voltage grid

Dedicated solution (e.g. harmonic filters) to improve the power factor and THD on the supply voltage grid.

Technical support during the whole lifecycle of the plant

Our worldwide service team provides ongoing support through tailored maintenance plans that ensure your equipment’s longevity.

High efficiency of the system

High-quality equipment and the design factors developed using our long-term experience ensure high performance.

Easy maintenance for each component

Easy access to all components within the PSU allows adequate space for maintenance activities.

Reduced footprint

Optimised to fit the toughest site constraints, thanks to a flexible and efficient design

Green hydrogen

Our solutions for hydrogen production

Modulo di conversione energetica FRIEM in struttura metallica, con componenti di ventilazione e dissipazione del calore

HyCon Station

Powered by cutting-edge, multilevel IGBT inverter technology, the HyCon Station is a reliable, outdoor-ready plug-and-play solution for industrial environments. Its efficient forced-air cooling system ensures optimal performance.
AFE technology enables AC/DC power conversion with high performance in terms of power quality on the power grid, without needing additional filter systems, thus reducing system complexity.

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HyCon Station

Powered by cutting-edge, multilevel IGBT inverter technology, the HyCon Station is a reliable, outdoor-ready plug-and-play solution for industrial environments. Its efficient forced-air cooling system ensures optimal performance.
AFE technology enables AC/DC power conversion with high performance in terms of power quality on the power grid, without needing additional filter systems, thus reducing system complexity.

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HyRec Station

Built on reliable multi-pulse SCR technology (6/12pulses per converter, expandable for multiple units), this PSU enables high DC current values whilemaintaing a compact footprint and high reliability.

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Vista interna di un container FRIEM per la conversione energetica, con componenti tecnici, trasformatori e sistema di ventilazione

HyRec Station

Built on reliable multi-pulse SCR technology (6/12pulses per converter, expandable for multiple units), this PSU enables high DC current values whilemaintaing a compact footprint and high reliability.

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Struttura modulare di conversione energetica FRIEM con sistema di ventilazione e dissipazione del calore per applicazioni industriali

HyDuo Station

It consists of a double conversion step: AC/D via diode/thyristor bridge (12 pulse) and a DC/DC chopper to adapt the DC Output voltage to the load demand.

This solution allows to simultaneously achieve high output currents and excellent performance in terms of both DC ripple to the electrolyser and power quality to the grid.

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HyDuo Station

It consists of a double conversion step: AC/D via diode/thyristor bridge (12 pulse) and a DC/DC chopper to adapt the DC Output voltage to the load demand.

This solution allows to simultaneously achieve high output currents and excellent performance in terms of both DC ripple to the electrolyser and power quality to the grid.

Find out more

HyRec Scale

Derived from the core business of chlor-alkali systems, this solution is mainly applied to powering alkaline electrolysers.

Developed using thyristor technology, a single unit can be sized for the independent power supply of multiple electrolysers (up to 60 MVA per single PSU).

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Unità di conversione energetica FRIEM con tubazioni e componenti per la gestione e distribuzione dell'energia

HyRec Scale

Derived from the core business of chlor-alkali systems, this solution is mainly applied to powering alkaline electrolysers.

Developed using thyristor technology, a single unit can be sized for the independent power supply of multiple electrolysers (up to 60 MVA per single PSU).

Find out more

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FRIEM Hydrogen solutions
Converters for green hydrogen production