Measurement Technology of High Frequency Interference Current of the Electric Energy Conversion Device in the Electromagnetic Launch System
Li Jianxuan1,2, Zhao Zhihua1, Zhang Xiangming1, Zhang Lei1
1. National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan 430033 China; 2. Naval Research Academy Beijing 100161 China
Abstract：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.
李建轩, 赵治华, 张向明, 张磊. 电磁发射系统逆变装置的高频干扰电流测量[J]. 电工技术学报, 2018, 33(24): 5805-5810.
Li Jianxuan, Zhao Zhihua, Zhang Xiangming, Zhang Lei. Measurement Technology of High Frequency Interference Current of the Electric Energy Conversion Device in the Electromagnetic Launch System. Transactions of China Electrotechnical Society, 2018, 33(24): 5805-5810.
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2018, Vol. 33 
