
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
王要强(1982 — ),男,教授,博士研究生导师,博士,研究方向为新能源与电力储能、电力系统运行与规划、综合能源分析与优化等(E-mail:WangyqEE@163.com);
闫武庆(1998 — ),男,硕士研究生,主要研究方向为单级式AC-DC变换器(E-mail:3027903686@qq.com);
刘文君(1990 — ),女,副教授,博士,通信作者,主要研究方向为AC-DC变换器、级联多电平变换器、直流微电网暂态分析等(E-mail:lwenjun1990@163.com)。
收稿日期:2024-07-12,
修回日期:2025-02-12,
网络出版日期:2025-04-18,
纸质出版日期:2025-09-10
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王要强,闫武庆,聂福全等.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(09):103-109.
WANG Yaoqiang,YAN Wuqing,NIE Fuquan,et al.Voltage gain analysis and optimization modulation strategy of single-stage dual active bridge AC-DC converter[J].Electric Power Automation Equipment,2025,45(09):103-109.
王要强,闫武庆,聂福全等.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(09):103-109. DOI: 10.16081/j.epae.202504010.
WANG Yaoqiang,YAN Wuqing,NIE Fuquan,et al.Voltage gain analysis and optimization modulation strategy of single-stage dual active bridge AC-DC converter[J].Electric Power Automation Equipment,2025,45(09):103-109. DOI: 10.16081/j.epae.202504010.
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。
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.
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