电磁发射系统逆变装置的高频干扰电流测量  

Measurement Technology of High Frequency Interference Current of the Electric Energy Conversion Device in the Electromagnetic Launch System

作　　者：李建轩 赵治华[1] 张向明[1] 张磊[1] Li Jianxuan;Zhao Zhihua;Zhang Xiangming;Zhang Lei(National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan 430033 China;Naval Research Academy Beijing 100161 China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033 [2]海军研究院,北京100161

出　　处：《电工技术学报》2018年第24期5805-5810,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金重大项目(51490681);国家自然科学基金(51422705)资助项目

摘　　要：高频干扰电流是电力电子装置电磁干扰特性的一项核心评价指标。随着电力电子技术的发展,电能变换装置的功率等级不断提高,电磁发射系统中逆变装置的工频电流高达10kA。电磁兼容测试常用电流探头,由于存在磁饱和问题,无法满足大电流系统测试需求。而常规的大电流传感器由于采用有源放大器,导致高频输出噪声大、测试灵敏度低,也不适用于逆变装置的高频干扰电流检测。为此提出基于Rogowski线圈和无源匹配电阻的柔性电流探头,实现了大电流系统高频干扰电流的精确测量;探头输出噪声低,且为柔性结构,可以方便地进行差模和共模电流检测。High frequency interference current is a key evaluating indicator for the characteristic of electromagnetic interference of power electronics conversion devices.With the development of power electronics technology,the power level of power conversion devices is constantly increasing,and the power current of the electric energy conversion devices in the electromagnetic launch system reaches up to 10kA.Current probes conventionally used in EMC(electromagnetic compatibility)detection cannot meet the test requirements of high current system due to the magnetic saturation problem.Meanwhile,since the conventional high current sensors adopt the active amplifier,the high-frequency output noise is large,and the sensitivity is low,which is not suitable for the high frequency interference current measurement in high current power devices.In this paper,a flexible current probe based on Rogowski coil and passive matching resistance is proposed.It can achieve accurate measurement of high current interference current in high current system,and also has low output noise level.Since the proposed probe has flexible structure,both differential mode and common mode current detection can be easily carried out.

关 键 词：电磁发射 大电流系统 高频干扰电流测量 无源柔性电流探头 

分 类 号：TM933.13[电气工程—电力电子与电力传动]