Circuit arrangement and method for operating a high-power DC load

The circuit arrangement for high-power DC loads, specifically in electrolysis devices, addresses high line voltages by using a controlled DC/DC converter to reduce ground voltages, allowing for cost-effective and efficient operation with lower dielectric strength components.

WO2026125729A1 Publication Date: 2026-06-18K B ELECTRONICS INC
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
K B ELECTRONICS INC
Filing Date
2025-12-12
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing high-power DC load circuits, particularly those used in electrolysis devices for hydrogen generation, require components with high dielectric strength due to high line voltages to ground, leading to increased costs.

⚗Method used

A circuit arrangement and method that includes an Active Front End (AFE) rectifier connected to a three-phase AC power source via a DC/DC converter, with specific control mechanisms to reduce line voltages to ground, using a DC/DC step-down converter with power switches, diodes, chokes, and capacitors, allowing for components with reduced dielectric strength.

🎯Benefits of technology

Reduces the absolute value of line voltages to ground, enabling the use of less expensive components and improving operational safety and efficiency in high-power DC load applications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a method for providing electrical energy to a high-power DC load, in particular to a device for generating hydrogen by electrolysis using the inventive circuit arrangement. Additionally, the invention relates to a circuit arrangement for providing electrical energy to a high-power DC load, in particular to a device for generating hydrogen by electrolysis. Furthermore, a use of the circuit arrangement is proposed. The object of the present invention to provide a method of providing electrical energy to a high-power DC load which allows the use of components with lower dielectric strength is achieved with a circuit arrangement is solved by claim 1.
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