张颖;荆龙;吴学智;武文;魏梦航;

• 1:国家能源主动配电网技术研发中心(北京交通大学)
• 2:北京电动车辆协同创新中心

摘要(Abstract)：

为了满足直流电网对直流变压器高效率、低成本的迫切需求,改进传统直流变压器设计容量大、效率低的不足,研究了一种基于改进的双向隔离型DC/DC变换器串并联结构的新型直流自耦变压器(DC AUTO)拓扑,只有部分功率经过变压器传输,可部分降低变压器的容量和设计成本,可依据两侧直流系统的电压等级灵活地对子模块进行串并联组合。采用交错并联控制减小了子模块的滤波电感和电容值从而降低了子模块体体积和成本。为了确保系统稳定运行,采用电容电压均衡控制和平均控制实现系统均压及均流。根据两侧是有源或无源特性提出2种整体控制策略。最后,对所提出的拓扑和控制策略进行仿真分析和实验验证。

关键词(KeyWords)： 直流电网;直流变压器;直流自耦变压器;双向DC/DC变换器;交错并联

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2016YFB0900500)~~

作者(Author): 张颖;荆龙;吴学智;武文;魏梦航;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.2471

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