高精度连续波速调管调制器  

Development of high stability CW klystron modulator

作　　者：蔡政平[1] 武志勇[1] Cai Zhengping;Wu Zhiyong(Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100170, China)

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

出　　处：《强激光与粒子束》2019年第4期134-138,共5页High Power Laser and Particle Beams

摘　　要：为了满足微波放大器副特性测试需要,研制了高精度电源调制器系统。采用阶梯调制与循环控制相结合的方式,实现了高稳定度输出控制。对调制器的拓扑结构和控制策略进行了分析,并介绍了脉冲步进调制器(PSM)模块和多绕组变压器等关键部件的设计方法。试验结果表明:采用PSM技术的电源调制器电源系统输出指标满足测试要求,能够稳定可靠工作并具备快速保护功能。To measure high frequency auxiliary character of klystron, a high stability CW modulator is designed. The modulator’s output voltage is 45 kV and output current is 9 A. 64 PSM(pulse step modulation) modules being connected in series have capability of both pulse and CW operation mode, and their output voltage can be adjusted from 500 μs pulse width to DC. Combined with step-modulation and cycle control strategy, high stability output is realized. Design of PSM module and multi-secondary transformer is given. Results of experiment prove that the modulator’s output voltage stability is less than 0.1% and could turn off in less than 5 μs when arc takes place.

关 键 词：脉冲步进调制器 脉冲高压 高稳定度 IGBT 多次级绕组变压器 

分 类 号：TL507[核科学技术—核技术及应用]