基于AC-Link的高增益AC-DC变换器拓扑设计及控制算法  

Topological design and control algorithm for AC-Link high gainseries resonant AC-DC converter

作　　者：李伯堂 刘庆想[1] 李伟[1] Li Botang;Liu Qingxiang;Li Wei(School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学物理科学与技术学院,成都610031

出　　处：《强激光与粒子束》2023年第7期112-118,共7页High Power Laser and Particle Beams

摘　　要：以AC-Link^(TM)能量变换的方式为基础,对变换器的拓扑结构和工作模式进行了改进,使谐振电路得以工作在双极性模式下,并基于新拓扑设计了相应的换流时序和控制算法,增强了变换器对三相输入电压波动的适应性,使其具备了理论上任意倍数的升压能力和高输入功率因数。利用Matlab/Simulink搭建了30 kW仿真模型,仿真结果显示,在三相电网输入、变压器变比1∶1及阻性负载的条件下,输出电压达到3 kV,升压能力达到了6倍。这表明该变换器具有大范围输出电压工作的能力。Based on the AC-Link^(TM) energy conversion method,this paper improves the topology and workingmode of the converter,so that the resonant circuit can work in bipolar mode,and designs the correspondingcommutation timing and control algorithm based on the new topology,which enhances the adaptability of theconverter to the three-phase input voltage fluctuation,so that it has the theoretical boost capability and high inputpower factor.Using Matlab/Simulink,a 30 kW simulation model was built,and the simulation results show that theoutput voltage reached 3kV and the boost capacity reached 6 times under the conditions of three-phase grid input,transformer ratio 1∶1 and resistive load,indicating that the converter has the ability to operate over a wide range ofoutput voltages.

关 键 词：交流链接技术 串联谐振 AC-DC变换器 状态平面分析法 电荷分配 

分 类 号：TN86[电子电信—信息与通信工程]