摘要
为了减小双有源桥式(DAB)DC-DC变换器在传统双重移相调制下(DPS)非重载区的电流应力,该文提出一种优化的双重移相(ODPS)调制策略。该优化的双重移相调制通过对内外移相角之间的关系重新约束,将影响电流应力最大的调制系数设置为0来减小电流应力,从而提高变换器整体效率。通过对优化的双重移相调制传输功率、电流应力和回流功率建立数学模型,并与传统DPS进行对比,分析两种移相调制同一传输功率下电流峰值和回流功率。最后通过实验验证了该文提出的优化的双重移相在非重载条件下电流峰值、输出效率等性能的优越性和理论分析正确性。
To reduce the reactive power and peak current with the dual active bridge DC-DC converter under conventional dual phase shift(DPS)at non-heavy load,an optimized dual phase shift(ODPS)modulation is proposed in this paper.Two freedom degrees of ODPS are redefined.Based on this condition,the mathematical model of transmission power,reactive power and current stress with ODPS modulation are established.Besides,the reactive power and current stress of ODPS and DPS under the same transmission power were compared and analyzed.By comparison and analysis,the reactive power and current stress at non-heavy load can be effectively reduced by ODPS modulation,and thus the system efficiency can be improved.At last,experimental results verify the excellent performance of transmission power with ODPS modulation and correctness of the theoretical analysis.
作者
王仁龙
杨庆新
操孙鹏
刘鹏
李珊瑚
Wang Renlong;Yang Qinxin;Cao Sunpen;Liu Peng;Li Shanhu(State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology ,Tianjin 300132 China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province Hebei University of Technology, Tianjin 300132 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2021年第S01期274-282,共9页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51907049)
河北省自然科学基金(E2020202095)
河北省高等学校科学技术研究青年基金(QN2018100)资助项目。
