大功率逆变式高压电源模块设计  

Design of high power density inverter-type high voltage power supply module

作　　者：蔡一鸣 张锦涛 夏于洋 李青 李春林 Cai Yiming;Zhang Jintao;Xia Yuyang;Li Qing;Li Chunlin(Southwestern Institute of Physics,Chengdu 610299,China)

机构地区：[1]核工业西南物理研究院,成都610299

出　　处：《强激光与粒子束》2025年第3期120-126,共7页High Power Laser and Particle Beams

基　　金：西物创新行动(202301XWCX002-04、202201XWCX002)。

摘　　要：为解决中性束注入系统中加速极高压电源输出电压纹波低、打火时高压电源输出能量低、打火快速关断的需求,以及高压打火可能损坏高频开关器件的问题,采用模块化逆变式电源模块方案,设计了120kV/80A模块化大功率逆变式高压电源,该电源将84个1600V/80A的高频逆变式模块化电源错相级联。高频逆变式电源模块通过变压器隔离,可在打火时有效保护开关器件;采用逆变频率20kHz的错相控制,在保证电压纹波的同时还可减小滤波电容的容量,满足打火能量限制的要求。最后仿真并搭建样机对模块性能进行测试,模块上升时间为67µs;打火关断时间为3.3µs;打火释放能量为1.3J;电压纹波为3.3%,经交错级联后模块可以满足纹波低于1%。结果表明该设计满足电压纹波低、快速关断、低打火释放能量的要求,验证了设计方案的可行性。To address issues of low output voltage ripple,low ignition energy,rapid shutdown,and to reduce the risk of high-voltage ignition damaging high-frequency switching devices in neutral beam injection systems,this paper proposes a modular inverter-type power supply design.A 120 kV/80 A high-power modular inverter is developed.It incorporates 84 high-frequency inverter modules(1600 V/80 A each)in a staggered-phase cascade.Transformer isolation of each module safeguards switching devices during ignition,and 20 kHz staggered phase control minimizes filter capacitor requirements while maintaining voltage ripple within specifications.Performance tests on the prototype show a rise time of 67μs,turn-off time of 3.3μs,ignition energy release of 1.3 J,and voltage ripple of 3.3%,with the ripple reduced to less than 1%after interleaving.The results demonstrate that the design achieves low voltage ripple,fast shutdown,and controlled energy release,confirming its feasibility.

关 键 词：高压电源 模块化 高频 错相 低纹波 

分 类 号：TM8[电气工程—高电压与绝缘技术]