| 引用本文: | 王要强,闫武庆,聂福全,刘文君,梁军.单级式双有源桥型AC-DC变换器电压增益分析及优化调制策略[J].电力自动化设备,2025,45(9):103-109,118. |
| WANG Yaoqiang,YAN Wuqing,NIE Fuquan,LIU Wenjun,LIANG Jun.Voltage gain analysis and optimization modulation strategy of single-stage dual active bridge AC-DC converter[J].Electric Power Automation Equipment,2025,45(9):103-109,118. |
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| 单级式双有源桥型AC-DC变换器电压增益分析及优化调制策略 |
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王要强1,2, 闫武庆1,2, 聂福全3, 刘文君1,2, 梁军1,4
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1.郑州大学 电气与信息工程学院，河南 郑州 450001;2.河南省电力电子与电力系统工程技术研究中心，河南 郑州 450001;3.河南科技学院 机电学院，河南 新乡 453003;4.卡迪夫大学 工程学院，英国 卡迪夫 CF24 3AA
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| 摘要: |
| 为了解决单级式双有源桥型AC-DC变换器在宽电压范围内软开关范围受限和漏感电流峰值较大的问题，提出一种计及电压增益的扩展移相变频调制策略。分析了副边侧扩展移相调制在宽电压范围内存在的漏感电流峰值较大的问题，继而提出一种计及电压增益的双模式调制；在此基础上，分析升压与降压模式的软开关条件，通过约束特定开关管开通时刻的漏感电流值，推导得出移相比和开关频率的数学表达式。该调制策略可以实现全范围软开关，并且能在一定程度上减小漏感电流峰值。通过仿真和实验证明了所提调制策略的可行性。 |
| 关键词: 单级式AC-DC变换器 双有源桥变换器 宽电压增益 扩展移相 软开关 |
| DOI：10.16081/j.epae.202504010 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(51507155,52007171)；中央引导地方科技发展资金资助项目(2022ZY0134) |
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| Voltage gain analysis and optimization modulation strategy of single-stage dual active bridge AC-DC converter |
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WANG Yaoqiang1,2, YAN Wuqing1,2, NIE Fuquan3, LIU Wenjun1,2, LIANG Jun1,4
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1.School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001, China;2.Henan Engineering Research Center of Power Electronics and Energy Systems, Zhengzhou 450001, China;3.School of Mechanical and Electrical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China;4.School of Engineering, Cardiff University, Cardiff CF24 3AA, UK
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| Abstract: |
| In order to solve the problems of limited soft switching range and large peak leakage inductance current in a wide voltage range of single-stage dual active bridge(DAB) AC-DC converter, an extended phase shift variable frequency modulation strategy considering voltage gain is proposed. The problem of large peak leakage inductance current in a wide voltage range of the secondary side extended phase shift modulation is analyzed, and then a dual mode modulation considering the voltage gain is proposed. On this basis, the soft switching conditions of the boost mode and the buck mode are analyzed, and the mathematical expressions of shift ratio and switching frequency are derived by constraining the leakage inductance current value at particular turn-on moments of switches. The modulation strategy enables full range soft switching and reduces the peak leakage inductance current to some extent. The feasibility of the proposed modulation strategy is proved by simulation and experimental verification. |
| Key words: single-stage AC-DC converter DAB converter wide voltage gain extended phase shift soft-switching |
