中国电机工程学报2025，Vol.45Issue(12)：4833-4842,中插26,11.DOI:10.13334/j.0258-8013.pcsee.241305
制氢用双极性堆叠交错DC/DC变换器调控方法
A Control Method of Bipolar Stacked Interleaved DC/DC Converter for Hydrogen Production
摘要
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 Nm3/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
DC/DC变换器/双极性/堆叠交错/纹波控制/环流抑制Key words
DC/DC converter/bipolar/stacked interleaved/ripple control/circulation suppression分类
动力与电气工程引用本文复制引用
李鹏程,盖钰堃,郭英军,华长春,孙鹤旭..制氢用双极性堆叠交错DC/DC变换器调控方法[J].中国电机工程学报,2025,45(12):4833-4842,中插26,11.基金项目
河北省教育厅科技计划(ZD2022030) （ZD2022030）
河北省省级科技计划(23284502Z) （23284502Z）
河北省引智项目(2023YX044A). Technology Project of Hebei Education Department(ZD2022030) （2023YX044A）
S&T Program of Hebei Province(23284502Z) （23284502Z）
Overseas Expertise Introduction Project of Hebei Province(2023YX044A). （2023YX044A）
