Modular supply concept for electrolyzers A modular solution consisting of AC/DC converters is ideal for supplying electrolysis cells with direct current. Find out in our white paper how a modular supply concept simplifies maintenance and has a beneficial effect on the availability and service life of electrolysis stacks.

Common to all electrolyzers is the need for direct current. Alternating current from the public power grid is initially rectified by AC/DC converters. Often, monolithic large converters are still used, which are installed individually for the respective electrolysis plant.

An alternative is a modular supply concept based on our AC/DC converters in the CHARX power system. With the wide range of possible topologies that can be implemented with the aid of modular AC/DC converters, the concept is suitable for use in pilot systems and large electrolyzers alike.

Modular rectifier concepts increase availability in electrolysis applications. If a defect occurs in a large monolithic converter, the entire electrolysis plant fails. However, with a modular approach, only the portion of the affected power module is lost. Depending on the system design, the failure of a power module can even be fully compensated.

• High availability of the power supply, as the failure of a rectifier module is effectively compensated or reduced
• Increased availability of electrolysis cells with module-based IGBT rectifier technology
• Increased service life and optimum efficiency in partial-load operation due to time-dependent replacement of AC/DC modules