基于AC-Link串联谐振的Buck-Boost变换器控制算法

罗集睿; 王庆峰; 张政权; 刘庆想; 何长鑫; 周勃

doi:10.11884/HPLPB201931.180279

基于AC-Link串联谐振的Buck-Boost变换器控制算法

doi: 10.11884/HPLPB201931.180279

西南交通大学物理科学与技术学院, 成都 610031

详细信息

作者简介:
罗集睿(1993—)，男，硕士研究生，主要从事开关电源及控制技术研究；luojirui@foxmail.com

通讯作者:
张政权(1983—)，男，副研究员，硕士生导师，主要从事开关电源及控制技术研究；zhangzhengquan8@163.com

中图分类号: TN82
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出版历程
- 收稿日期: 2018-10-23
- 修回日期: 2019-01-12
- 刊出日期: 2019-02-15

Control algorithm of Buck-Boost converter based on AC-Link series resonant

School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China

摘要

摘要: 介绍了一种基于AC-Link串联谐振的Buck-Boost变换器拓扑结构，用状态平面分析法对串联谐振电路在Buck模式和Boost模式下工作过程进行分析。该方法相比于传统的基波等效分析法具有直接、精确和求解简单的特点。给出了详细的推导过程，提出了一种控制算法。建立了Matlab/Simulink仿真模型，仿真结果表明，该控制算法能够实现Buck和Boost的功能，能够得到稳定的输出电压，输入电流谐波含量低的特点，可以实现变换器在较宽的范围内调节输出电压。
- 高频交流链接技术 /
- 串联谐振 /
- 状态平面分析法 /
- Buck-Boost变换器
Abstract: This paper introduces a topology structure of Buck-Boost converter based on AC-Link series resonant. The state-plane analysis method is used to analyze the working process of series resonant circuit in Buck mode and Boost mode. This method is relatively direct, accurate and simple compared with the simple basic wave equal effect analysis method. A detailed derivation is given and a control algorithm is proposed. The simulation model of Matlab/Simulink is set up. The simulation results show that the control algorithm can realize the function of Buck and Boost, and low current harmonic content. And the converter can adjust the output voltage in a wide range.
- HF AC-Link /
- series resonant /
- state plane analysis /
- Buck-Boost converter

HTML全文

图 1 基于AC-Link技术的串联谐振Buck-Boost变换器拓扑结构

Figure 1. Topology of series resonant Buck-Boost converter based on AC-Link technology

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图 2 Boost模式正半周3个工作过程等效电路图

Figure 2. Equivalent circuit diagram of 3 working processes in Boost mode positive half-cycle

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图 3 Boost模式下正半周状态平面图

Figure 3. State-plane diagram of the Boost mode

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图 4 Buck模式正半周3个工作过程等效电路图

Figure 4. Equivalent circuit diagram of 3 working processes in Buck mode positive half cycle

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图 5 Buck模式下正半周状态平面图

Figure 5. State-plane diagram of the Buck mode

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图 6 Buck模式下600 V输出电压波形图

Figure 6. Output voltage 600 V in Buck mode

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图 7 Buck模式下输入电流谐波含量

Figure 7. Harmonic content of input current in Buck mode

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图 8 Boost模式下850 V输出电压波形图

Figure 8. Output voltage 850 V in Boost mode

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图 9 Boost模式下输入电流谐波含量

Figure 9. Harmonic content of input current in Boost mode

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表 1 仿真模型参数

Table 1. Simulation model parameters

three-phase voltage/V	resonant inductor/μH	resonant capacitor/μF	load/Ω	transformer ratio	output capacitance/μF
380	20	0.9	18.75	1:1.5	47

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参考文献(10)

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