Multi-Phase Stacked Interleaved Buck Converter for Hydrogen-Production Electrolysis with Low-Voltage-Stress Ripple Compensation Circuit
Year: 2026
Type: article
Abstract: A multi-phase stacked interleaved buck converter (SIBC) is suitable for large-power water electrolysis applications due to its merits of high current output capability and zero output current ripple. However, the auxiliary converter used to compensate for the current ripple still has to withstand high voltage stress. This paper proposes a new multi-phase SIBC applied in the multicarrier energy system integrating electricity, heat, and hydrogen. A resistor-capacitor voltage divider is used to provide the input voltage of the auxiliary converter and as a heater for the thermal loads. Thus, the voltage stress of the auxiliary converter can be reduced at a low cost, and the size of the filter inductor can be reduced. With accurate voltage and current analysis and appropriate parameter design, the voltage stresses of both the switches and capacitors in the auxiliary converter can be further limited within an expected range. The experimental results verify the correctness of the topology, modulation, analysis, and design methods. A comparison with the conventional method is made in terms of cost, volume, and efficiency to show the advantages of the proposed method.
Institution: Yanshan University
Language: English
Topic: Advanced DC-DC Converters
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7128744315