高精度连续波速调管调制器

蔡政平; 武志勇

doi:10.11884/HPLPB201931.180287

高精度连续波速调管调制器

doi: 10.11884/HPLPB201931.180287

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

详细信息

作者简介:
蔡政平(1974—)，男，高级工程师，从事脉冲功率技术和电力电子技术研究；zhpcai@mail.ie.ac.cn

中图分类号: TL507
计量
- 文章访问数: 1231
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- 被引次数: 0
出版历程
- 收稿日期: 2018-10-23
- 修回日期: 2019-01-14
- 刊出日期: 2019-04-15

Development of high stability CW klystron modulator

Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100170, China

摘要

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。
- 脉冲步进调制器 /
- 脉冲高压 /
- 高稳定度 /
- IGBT /
- 多次级绕组变压器
Abstract: 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.
- pulse step modulation /
- pulsed power /
- high stability /
- IGBT /
- multi-secondary transformer

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图 1 PSM调制器组成和原理框图

Figure 1. Schematic diagram of PSM modulator

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图 2 PSM模块原理图

Figure 2. Diagram of PSM module

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图 3 PSM模块工作时序波形图

Figure 3. Time sequence of PSM modules operation

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图 4 多次级绕组变压器整体连接方式

Figure 4. Connection of multi-secondary transformers

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图 5 调制器脉冲电压和打火关断波形

Figure 5. Waveforms of output voltage and over current protection

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