1.5MW高功率连续波PSM电源研制  

Development of 1.5 MW High Power PSM Power Supply

作　　者：蔡政平[1] 武志勇[1] 李伟松[1] 

机构地区：[1]中国科学院电子学研究所中国科学院高功率微波源与技术重点实验室,北京100170

出　　处：《高电压技术》2016年第3期762-768,共7页High Voltage Engineering

基　　金：中国科学院重点仪器研制项目(2013ZY10126)~~

摘　　要：为了测试新型高功率速调管,开展了高功率连续波脉冲步迹调制(PSM)高压电源的研制工作。介绍了电源系统的主要指标和工作原理,对电源核心部件多绕组变压器进行了建模仿真并对其分布电容储能情况进行了分析,阐述了PSM模块的设计方法和电源控制系统及其控制策略等关键技术问题。描述了速调管快速保护电路的设计和功能,结合熔丝短路试验对保护效果进行了评估。在额定负载条件下,测试了电源输出特性并给出了有关波形,电源输出达到75 k V/20 A,电压纹波<1%,打火保护速度<10μs。试验证明该电源设计合理可靠、运行稳定,可以用于速调管测试。We developed a 1.5 MW pulse step modulation（PSM） power supply for klystron test bed, and introduced three main advantages of PSM system, namely,good reliability, compatibility of pulse and DC mode, fast switch and protection speed. Moreover, we presented main parameters and design methods of system, studied and modeled multiple windings transformer, an important component of power system with Magnetic Component Tool（MCT） of SABER software, and analyzed stored energy in stray capacitances. The principles of PSM modules were introduced. Control unit which adopted microcontroller and FPGA to realize data and command communication with master-slave mode and its control strategy were discussed in detail. Combined with introduction of Klystron arc fast protection circuits, short circuit energy and evaluation were experimentally investigated. The results indicate the discharged energy is less than 5 J, a safe level for Klystron and other vacuum electronics devices. With a resister load, power supply is tested under various conditions, and output voltage and current waveforms are given. The test results show that system can reach 75 k V/20 A with 1% ripple, and arc protection time is less than 10 μs. PSM power supply can meet system requirements, therefore, it can be used not only for Tokamak but also for high power microwave devices test.

关 键 词：高功率 脉冲步进调制 IGBT 速调管 变压器 

分 类 号：TN86[电子电信—信息与通信工程]