A Control Method of Bipolar Stacked Interleaved DC/DC Converter for Hydrogen Production

Pengcheng LI; Yukun GE; Yingjun GUO; Changchun HUA; Hexu SUN

doi:10.13334/j.0258-8013.pcsee.241305

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A Control Method of Bipolar Stacked Interleaved DC/DC Converter for Hydrogen Production

Power Electronics | 更新时间：2026-01-19

- A Control Method of Bipolar Stacked Interleaved DC/DC Converter for Hydrogen Production
- Proceedings of the CSEE Vol. 45, Issue 12, Pages: 4833-4842(2025)
- 作者机构：
  
  河北科技大学电气工程学院, 河北省石家庄市 050018
- 作者简介：
- 基金信息：
  
  Hebei Education Department(ZD2022030);S&T Program of Hebei Province(23284502Z);Overseas Expertise Introduction Project of Hebei Province(2023YX044A)
- DOI：10.13334/j.0258-8013.pcsee.241305
  CLC： TM464
- Received：05 June 2024，
  
  Published Online：30 September 2024，
  
  Published：20 June 2025
- 稿件说明：
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Pengcheng LI, Yukun GE, Yingjun GUO, et al. A Control Method of Bipolar Stacked Interleaved DC/DC Converter for Hydrogen Production[J]. Proceedings of the CSEE, 2025, 45(12): 4833-4842.
DOI：

Pengcheng LI, Yukun GE, Yingjun GUO, et al. A Control Method of Bipolar Stacked Interleaved DC/DC Converter for Hydrogen Production[J]. Proceedings of the CSEE, 2025, 45(12): 4833-4842. DOI： 10.13334/j.0258-8013.pcsee.241305.

摘要

在直流微网制氢中，研究双极性、大电流和无纹波特性的DC/DC制氢变换器有利于提高效率。该文在伪双极三相交错并联Buck制氢变换器的基础上，借鉴传统6脉波相控整流的方法，对开关相序和调制方式进行重构。定义共阴极桥臂上管为主控管相位依次交错120°、共阳极桥臂下管为主控管相位依次交错120°，各主控管相位依次交错60°，上下桥臂可进行能量传递，形成真双极堆叠六相交错DC/DC制氢变换器，保证双电解槽内部流场分布均匀；250 kW-50 Nm

/h制氢系统考虑1 200 V直流母线2%波动和两电解槽20%等效阻抗偏差，在双闭环自均流控制的基础上引入中线虚拟电阻下垂控制，实现对相间环流和对地环流的有效抑制。实验表明，DC/DC变换器综合性能良好，所提控制策略有效，可用于直流微网制氢。

Abstract

For hydrogen production in DC microgrids

investigating a DC/DC hydrogen production converter with bipolar voltage

high current

and ripple-free characteristics can improve electrolysis efficiency and enhance renewable energy integration. Based on the pseudo-bipolar three-phase interleaved Buck hydrogen production converter

this study reconstructs the switching phase sequence and modulation method by drawing on the principles of traditional six-pulse phase-controlled rectification. The upper switches of the common-cathode bridge arms and the lower switches of the common-anode bridge arms are designated as the main control switches

with a phase shift of 120°between each

while the main control switches of the upper and lower bridge arms are staggered by 60°. This configuration enables energy transfer between the upper and lower bridge arms

forming a true-bipolar stacked six-phase interleaved DC/DC hydrogen production converter

ensuring uniform flow field distribution within the dual electrolyzers. For a 250 kW–50 Nm

/h hydrogen production system

considering a 2% fluctuation in the 1200 V DC bus and a 20% equivalent impedance mismatch between the two electrolyzers

a virtual resistance droop control for the neutral line is introduced in addition to the dual closed-loop self-current-sharing control

effectively suppressing both inter-phase circulating currents and ground-loop currents. Experimental results demonstrate that the DC/DC converter exhibits excellent overall performance

and the proposed control strategy is effective

making it suitable for hydrogen production in DC microgrids.

关键词

Keywords

references

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