Key Issues and Challenges of Wide-gain Bidirectional Quasi-single-stage Isolated DC-DC Converters&nbsp;

LIU Fei; LI Jinyu; ZHAO Yang#br#<div>	#br#</div>

doi:10.19718/i.issn.1005-2992.2025-02-0008-06

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Key Issues and Challenges of Wide-gain Bidirectional Quasi-single-stage Isolated DC-DC Converters

更新时间：2025-10-16

- Key Issues and Challenges of Wide-gain Bidirectional Quasi-single-stage Isolated DC-DC Converters
- Journal of Northeast Electric Power University Vol. 45, Issue 2, (2025)
- 作者机构：
  
  南京航空航天大学自动化学院,江苏,南京,211106
- 作者简介：
- 基金信息：
- DOI：10.19718/i.issn.1005-2992.2025-02-0008-06
  CLC：
- Published Online：30 April 2025，
  
  Published：2025
- 稿件说明：
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LIU Fei, LI Jinyu, ZHAO Yang#br#
#br#
. Key Issues and Challenges of Wide-gain Bidirectional Quasi-single-stage Isolated DC-DC Converters [J]. Journal of northeast electric power university, 2025, 45(2).
DOI：

LIU Fei, LI Jinyu, ZHAO Yang#br#
#br#
. Key Issues and Challenges of Wide-gain Bidirectional Quasi-single-stage Isolated DC-DC Converters [J]. Journal of northeast electric power university, 2025, 45(2). DOI： 10.19718/i.issn.1005-2992.2025-02-0008-06.

摘要

随着新能源汽车的迅速发展，车用无线通讯技术（Vehicle to Everything

V2X）成为车-网-荷互联和能源共享的有效手段。作为V2X技术的核心单元，双向DC-DC变换器是实现能量交互的关键装备。面对动力电池电压的大幅波动特征，如何在宽电压范围内实现加权效率最大化、减少器件数量并提升功率密度，是V2X双向变换器发展中一直追求的目标。文中针对宽范围调压双向准单级隔离型DC-DC变换器，从变换器拓扑、调制策略和控制方面这三个方面，对现有的研究进行了总结和梳理，给出了现有研究存在的不足和挑战。

Abstract

With the rapid development of new energy vehicles

V2X Vehicle to Everything）technology has become an effective means for vehicle-grid-load interconnection and energy sharing.As the core component of V2X technology

the bidirectional DC-DC converter is a key device for energy interaction.Faced with the significant voltage fluctuations of power batteries

how to maximize weighted efficiency over a wide voltage range

reduce the number of components

and enhance power density has always been the goal pursued in the development of V2X bidirectional converters.This paper focuses on wide-range gain bidirectional quasi-single-stage isolated DC-DC converters

which summarizes and reviews the existing research from three aspects:converter topology

modulation strategy

and control.The paper also identifies the shortcomings and challenges of the current research.

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