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Prax Power

Reliable and High-Performance Power Rectifier for Hydrogen Electrolyzers

Market Trends

In hydrogen production via electrolysis, AC grid power is converted into variable DC to drive the electrochemical reaction.

This is typically done using interleaved buck converters, which ensure efficient, high-current delivery for splitting water into hydrogen and oxygen.

Typical Requirements

  • 135kW, 3-phases buck converter for electrolysis system.
  • High system efficency: 96-98%.
  • High DC current handling without core saturation.
  • Magnetic loss control at industrial switching frequencies.
  • Stable performance across temperature and frecuency variations.
  • Compact design: ±1 kW/L.  
  • Water cooling design.
  • Mechanical integration into constrained cabinets.

PRAX approach: Custom inductors for Electrolyzers

  • Buck inductors operating at 10kW to 15kW.
  • High-current tolerance without saturation.
  • Multigap ferrite core minimizing fringing losses.
  • Enhanced thermal management: Toroidal format with helical flat wire + high conductive potting.
  • Compact design for easy integration.
  • Designs validated under industrial thermal and electrical constraints.
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