高磁场磁共振超导磁体电源的拓扑设计与分析  

Topology design and analysis of high field magnetic resonance superconducting magnet power supply

作　　者：代天立 周超 秦经刚 李建刚[1] 高格[1] DAI Tian-li;ZHOU Chao;QIN Jing-gang;LI Jian-gang;GAO Ge(Institute of Plasma Physics,ChineseAcademy of Sciences,Hefei 230031;University of Science and Technology of China,Hefei 230036)

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《核聚变与等离子体物理》2021年第1期72-77,共6页Nuclear Fusion and Plasma Physics

基　　金：中国科学院“未来高场磁体技术发展研究”战略先导专项B类专项(Y15YZ53291)。

摘　　要：针对高磁场磁共振大孔径人体成像系统中超导磁体电源在励磁时向磁体充能、退磁时把能量"逆变"回电网的设计要求,比较了两种能量回馈型的拓扑结构。通过Matlab仿真分析,验证了拟采用的拓扑结构的合理性。The power supply of high field magnetic resonance superconducting magnet in a large aperture human body imaging system works in two aspects,i.e.normal excitation and demagnetization.The demagnetization energy is returned to the power grid through the"inversion"of the power supply.According to the design requirements,two kinds of energy feedback topologies are analyzed and compared.The proposed topology is analyzed and simulated with the Matlab/Simulink analysis.

关 键 词：高磁场磁共振 超导磁体 脉冲宽度调制整流 H桥电路 LCR滤波器 

分 类 号：TM46[电气工程—电器]